1
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Cui Y, Ji S, Zhu Y, Xi J. Mo 2C-Co heterostructure with carbon nanosheets decorated carbon microtubules: Different means for high-performance lithium-sulfur batteries. J Colloid Interface Sci 2024; 675:1119-1129. [PMID: 39074437 DOI: 10.1016/j.jcis.2024.07.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 07/21/2024] [Accepted: 07/23/2024] [Indexed: 07/31/2024]
Abstract
The practical applications of lithium sulfur batteries (LSBs) are hindered by notorious shuttle effect and sluggish conversion kinetics of intermediate polysulfides. Herein, Mo2C-Co heterogeneous particles decorated two-dimensional (2D) carbon nanosheets grown on hollow carbon microtubes (CCC@MCC) are synthesized. Three-dimensional (3D) carbon framework with Mo2C-Co heterogeneous particles combines the conductivity, adsorption and catalysis, effectively trapping and accelerating the conversion of polysulfides. As evidenced experimentally, the hetero-structured Mo2C-Co with high Li+ diffusion coefficient enables uniform precipitation and complete oxidation of Li2S. Meanwhile, CCC@MCC is found to have multiple application possibilities for lithium-sulfur batteries. As an interlayer, the cells deliver an excellent capacity of 881.1 mAh/g at 2C and still retain 438.2 mAh/g after 500 cycles under the low temperature of 0 ℃. As a sulfur carrier, the cell with a sulfur loading of 7.0 mg cm-2 exhibits a high area capacity of 5.3 mAh cm-2. This work provides an effective strategy to prepare heterostructured material and imaginatively exploit the application potential of it.
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Affiliation(s)
- Yating Cui
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Siyu Ji
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Yujie Zhu
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Jingyu Xi
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.
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2
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Londono Monsalve JM, Kovalska E, Craciun MF, Marsico MR. Graphene nanoplatelets on recycled rubber: an experimental study of material properties and mechanical improvements. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2024; 382:20230324. [PMID: 39246076 PMCID: PMC11416811 DOI: 10.1098/rsta.2023.0324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 07/05/2024] [Accepted: 07/26/2024] [Indexed: 09/10/2024]
Abstract
This study presents an experimental investigation of the mechanical behaviour of recycled rubber pads coated with graphene nanoplatelets. The investigation is part of an effort to develop a novel rubber-based composite that aims to reroute rubber from end-of-life tyres from illegal landfills and incineration back into the market in the form of a novel composite for vibration isolation. Graphene nanoplatelets were deposited on rubber pads via ultrasonic spray coating. The pads were made of a combination of recycled rubber (from tyres) and virgin rubber. A comprehensive analysis of the structural and chemical properties of the graphene coating, ensuring its integrity on the rubber substrate, was performed by combining surface topography, Raman and Fourier-transform infrared (FTIR) spectroscopy. Stacked coated pads were cured and tested dynamically in compression and shear under cyclic loading. Results showed promising improvements in the mechanical properties, in particular, in compressive stiffness and damping of the coated specimens with respect to their uncoated counterparts, laying the foundation for using graphene-enhanced recycled rubber as a novel composite.This article is part of the theme issue 'Celebrating the 15th anniversary of the Royal Society Newton International Fellowship'.
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Affiliation(s)
| | - E. Kovalska
- Department of Engineering, University of Exeter, ExeterEX4 4QF, UK
| | - M. F. Craciun
- Department of Engineering, University of Exeter, ExeterEX4 4QF, UK
| | - M. R. Marsico
- Department of Engineering, University of Exeter, ExeterEX4 4QF, UK
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3
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Mooij BJA, Schmidt RW, Vijvers WAJ, Ariese F. A versatile Raman setup with time-gating and fast wide-field imaging capabilities. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 318:124388. [PMID: 38795525 DOI: 10.1016/j.saa.2024.124388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/27/2024] [Accepted: 04/29/2024] [Indexed: 05/28/2024]
Abstract
Raman spectroscopy is a well-established method for chemical identification, with a wide variety of applications. The two major limitations are that fluorescence can hamper detection, and that Raman imaging is slow; it typically takes multiple hours to measure even a small surface area. We have developed a multimodal setup that mitigates these limitations. The setup has a point-scanning mode that allows for time-gated as well as continuous Raman spectroscopy, and both modes use an 80 MHz, 532 nm excitation laser with up to 20 W of power. The fluorescence suppression capabilities of the setup were demonstrated by comparing time-gated to continuous detection of a Dracaena leaf. Raman bands showed a 4-8 times improvement in signal-to-background ratio, and one band that was invisible in the continuous measurement, became visible in the time-gated measurement. The setup also has a 4-band simultaneously detected wide-field mode. Using a set of beam splitters, the Raman signal from the sample is split. This signal is imaged onto four separate cameras, each with a specific band-pass filter. The wide-field data were processed using principal component analysis with k-means clustering. To illustrate the wide-field capabilities of the setup, a 1mm2 sample containing aspirin, caffeine and paracetamol was measured using 10 W excitation power. A 10-second measurement enabled identification of the compounds, and a 1-second measurement showed promising results. This brings the setup close to real-time imaging, showing great potential for applications in quality control or for measuring samples that change over time.
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Affiliation(s)
- Bram J A Mooij
- LaserLaB, Faculty of Sciences, Vrije Universiteit Amsterdam, de Boelelaan 1081, 1081 HV, Amsterdam, The Netherlands.
| | - Robert W Schmidt
- LaserLaB, Faculty of Sciences, Vrije Universiteit Amsterdam, de Boelelaan 1081, 1081 HV, Amsterdam, The Netherlands
| | - Wouter A J Vijvers
- Chromodynamics B.V., High Tech Campus 12, 5656 AE Eindhoven, The Netherlands
| | - Freek Ariese
- LaserLaB, Faculty of Sciences, Vrije Universiteit Amsterdam, de Boelelaan 1081, 1081 HV, Amsterdam, The Netherlands
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4
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Zhao L, Chang Z, Guo B, Lu Y, Lu X, Ren Q, Lv A, Nie J, Ji D, Rotenberg MY, Wang B, Zhang Y, Fang Y. Robust, stretchable bioelectronic interfaces for cardiac pacing enabled by interfacial transfer of laser-induced graphene via water-response, nonswellable PVA gels. Biosens Bioelectron 2024; 261:116453. [PMID: 38850739 DOI: 10.1016/j.bios.2024.116453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/19/2024] [Accepted: 05/27/2024] [Indexed: 06/10/2024]
Abstract
Implantable cardiac pacemakers are crucial therapeutic tools for managing various cardiac conditions. For effective pacing, electrodes should exhibit flexibility, deformability, biocompatibility, and high conductivity/capacitance. Laser-induced graphene (LIG) shows promise due to its exceptional electrical and electrochemical properties. However, the fragility of LIG and the non-stretchability of polyimide substrates pose challenges when interfacing with the beating heart. Here, we present a simple method for fabricating robust, flexible, and stretchable bioelectronic interfaces by transferring LIG via water-responsive, nonswellable polyvinyl alcohol (PVA) gels. PVA solution penetrates the porous structure of LIG and solidifies into PVA xerogel as the solvent evaporates. The robust PVA xerogel enables the smooth transfer of LIG and prevents stretching of the LIG network during this process, which helps maintain its conductivity. When hydrated, the xerogel becomes a stable, nonswellable hydrogel. This gives the LIG-PVA hydrogel (LIG-PVA-H) composites with excellent conductivity (119.7 ± 4.3Ω sq-1), high stretchability (up to 420%), reliability (cyclic stretch under 15% strain, with ∼ 1-time resistance increase), and good stability in phosphate buffered saline. The LIG-PVA-H composites were used as biointerfaces for electrocardiogram signal recording and electrical pacing on rat hearts ex vivo and in vivo, using commercial setups and a custom-built implantable wireless device. This work expands the application of LIG in bioelectronic interfaces and facilitates the development of electrotherapy for cardiac diseases.
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Affiliation(s)
- Lei Zhao
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Zhiqiang Chang
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Bihan Guo
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Yuhan Lu
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Xinxin Lu
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Qinjuan Ren
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Ailin Lv
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Jianfang Nie
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Daizong Ji
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Menahem Y Rotenberg
- Department of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Bingfang Wang
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Ya Zhang
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Yin Fang
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China.
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5
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Brustoloni CJM, Soltan Khamsi P, Kammarchedu V, Ebrahimi A. Systematic Study of Various Functionalization Steps for Ultrasensitive Detection of SARS-CoV-2 with Direct Laser-Functionalized Au-LIG Electrochemical Sensors. ACS APPLIED MATERIALS & INTERFACES 2024; 16:49041-49052. [PMID: 39231012 DOI: 10.1021/acsami.4c09571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
The 2019 coronavirus (COVID-19) pandemic impaired global health, disrupted society, and slowed the economy. Early detection of the infection using highly sensitive diagnostics is crucial in preventing the disease's spread. In this paper, we demonstrate electrochemical sensors based on laser induced graphene (LIG) functionalized directly with gold (Au) nanostructures for the detection of SARS-CoV-2 with an outstanding limit of detection (LOD) of ∼1.2 ag·mL-1. To achieve the optimum performance, we explored various functionalization parameters to elucidate their impact on the LOD, sensitivity, and linearity. Specifically, we investigated the effect of (i) gold precursor concentration, (ii) cross-linker chemistry, (iii) cross-linker and antibody incubation conditions, and (iv) antigen-sensor interaction (diffusion-dominated incubation vs pipette-mixing), as there is a lack of a systematic study of these parameters. Our benchmarking analysis highlights the critical role of the antigen-sensor interaction and cross-linker chemistry. We showed that pipette-mixing enhances sensitivity and LOD by more than 1.6- and 5.5-fold, respectively, and also enables multimodal readout compared to diffusion-dominated incubation. Moreover, the PBA/Sulfo-NHS: EDC cross-linker improves the sensitivity and LOD compared to PBASE. The sensors demonstrate excellent selectivity against other viruses, including HCoV-229E, HCoV-OC43, HCoV-NL63, and influenza H5N1. Beyond the ability to detect antigen fragments, our sensors enable the detection of antigen-coated virion mimics (which are a better representative of the real infection) down to an ultralow concentration of ∼5 particles·mL-1.
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Affiliation(s)
- Caroline Ji-Mei Brustoloni
- Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Pouya Soltan Khamsi
- Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for Atomically Thin Multifunctional Coatings, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Vinay Kammarchedu
- Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for Atomically Thin Multifunctional Coatings, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Aida Ebrahimi
- Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Center for Atomically Thin Multifunctional Coatings, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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6
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Huang L, Gan Y. A review on SEM imaging of graphene layers. Micron 2024; 187:103716. [PMID: 39276729 DOI: 10.1016/j.micron.2024.103716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 09/03/2024] [Accepted: 09/06/2024] [Indexed: 09/17/2024]
Abstract
Atomic-thick graphene has stimulated great interests for exploring fundamental science and technological applications due to its promising electronic, mechanical and thermal properties. It is important to gain a deeper understanding of geometrical/structural characteristics of graphene and its properties/performance. Scanning electron microscopy (SEM) is indispensable for characterizing graphene layers. This review details SEM imaging of graphene layer, including the SEM image contrast mechanism of graphene layers, imaging parameter-dependent contrast of graphene layers and the influence of polycrystalline substrates on image contrast. Furthermore, a summary of SEM applications in imaging graphene layers is also provided, including layer-number determinations, study of chemical vapor deposition (CVD)-growth mechanism, and reveal of anti-corrosive failure mechanism of graphene layers. This review will provide a systematic and comprehensive understanding on SEM imaging of graphene layers for graphene community.
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Affiliation(s)
- Li Huang
- School of Electronics and Information Engineering, Hebei University of Technology, Tianjin 300130, PR China; Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, Tianjin 300130, PR China.
| | - Yang Gan
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China; MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, PR China
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7
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Kotsyubynsky V, Khimyak YZ, Zapukhlyak R, Boychuk V, Turovska L, Hoi V. NaOH-assisted hydrothermal reduction of graphene oxide. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:495701. [PMID: 39214133 DOI: 10.1088/1361-648x/ad75dc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2024] [Accepted: 08/30/2024] [Indexed: 09/04/2024]
Abstract
The influence of the pH of the reaction medium on the structural characteristics of hydrothermally reduced graphene oxide, synthesized by the tour method, has been investigated. Varying the pH of the reaction medium within the range of 8.0, 10.0 and 12.0 (adjusted with NaOH) has revealed distinct effects on the morphology and properties of the resulting reduced graphene oxide. At a pH of 8.0 the hydrothermal treatment yielded reduced graphene oxide comprising of two particle fractions with a thickness equivalent to 4-5 graphitic layers each. In contrast, pH of 10.0 resulted in two particle fractions corresponding to 2-3 and 4 layers, respectively, while pH of 12.0 produced a single fraction with a particle thickness of 0.70 nm, encompassing 3 graphitic layers. Increasing the pH led to a decrease in the average lateral size of reduced graphene oxide particles to about 8 nm. All rGOs had micro- and mesopores with a specific surface area up to 226 m2g-1, showing a proportional increase in mesopores with increasing pH. Analysis of slit-like micropores revealed a minimum fractal dimension (D= 2.18) at pH = 8.0. The obtained results provide valuable insights into tailoring the structural properties of hydrothermally reduced graphene oxide by controlling the pH of the reaction medium, offering potential applications in various fields, including nanotechnology and materials science.
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Affiliation(s)
- Volodymyr Kotsyubynsky
- Department of Materials Science and New Technologies, Vasyl Stefanyk Precarpathian National University, 76018 Ivano-Frankivsk, Ukraine
| | - Yaroslav Z Khimyak
- School of Pharmacy, University of East Anglia, NR4 7TJ Norwich, United Kingdom
| | - Ruslan Zapukhlyak
- Department of Computer Engineering and Electronics, Vasyl Stefanyk Precarpathian National University, 76018 Ivano-Frankivsk, Ukraine
| | - Volodymyra Boychuk
- Department of Materials Science and New Technologies, Vasyl Stefanyk Precarpathian National University, 76018 Ivano-Frankivsk, Ukraine
| | - Liliia Turovska
- Department of Medical Informatics, Medical and Biological Physics, Ivano-Frankivsk National Medical University, 76018 Ivano-Frankivsk, Ukraine
| | - Vladyslav Hoi
- Department of Materials Science and New Technologies, Vasyl Stefanyk Precarpathian National University, 76018 Ivano-Frankivsk, Ukraine
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8
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Rahman MM, Sarkar B, Rahman MT, Jin GJ, Uddin MJ, Bhuiyan NH, Shim JS. Development of a highly sensitive CNT-metal graphene hybrid nano-IDA electrochemical biosensor for the diagnosis of Alzheimer's disease. Biomater Sci 2024. [PMID: 39240173 DOI: 10.1039/d4bm00654b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2024]
Abstract
The blood-based detection of Alzheimer's disease (AD) is becoming challenging since the blood-brain barrier (BBB) restricts the direct circulation of AD molecules in the blood, thereby precluding the detection of AD at an early-stage. Herein, we report the development of a novel CNT-metal-porous graphene hybrid (CNT-MGH) nano-interdigitated array (n-IDA) electrochemical 8-well biosensor for the successful early-stage diagnosis of AD from blood. Laser-induced graphene (LIG) technology has been used to fabricate the proposed CNT-MGH n-IDA 8-well sensor. Firstly, the electrochemical characterization (i.e., electrode gap, material composition, etc.) of the proposed sensor was demonstrated by measuring p-aminophenol (PAP) with a limit of detection (LOD) of 0.1 picomole. Subsequently, the CNT-MGH n-IDA 8-well sensor was then used to diagnose AD via novel blood biomarkers p-Tau 217 and p-Tau 181 using an electrochemical enzyme-linked immunosorbent assay (e-ELISA) enzyme by-product PAP. During e-ELISA, the alkaline phosphatase enzyme (IgG-AP) tagged to the detection antibody produced an electroactive ELISA by-product PAP by reacting with the enzyme-substrate 4-aminophenyl phosphate (PAPP). Finally, the CNT-MGH n-IDA 8-well sensor was then used to measure the current generated by the redox reaction via the e-ELISA by-product PAP. While quantified, the proposed CNT-MGH n-IDA 8-well sensor successfully detected p-Tau 217 and p-Tau 181 proteins in blood with LODs of 0.16 pg ml-1 and 0.08 pg ml-1, respectively.
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Affiliation(s)
- M Mahabubur Rahman
- Bio IT Convergence Laboratory, Department of Electronic Convergence Engineering, Kwang-woon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea.
| | - Bappa Sarkar
- Bio IT Convergence Laboratory, Department of Electronic Convergence Engineering, Kwang-woon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea.
| | - Md Tareq Rahman
- Bio IT Convergence Laboratory, Department of Electronic Convergence Engineering, Kwang-woon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea.
| | - Gyeong J Jin
- Bio IT Convergence Laboratory, Department of Electronic Convergence Engineering, Kwang-woon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea.
| | - M Jalal Uddin
- Bio IT Convergence Laboratory, Department of Electronic Convergence Engineering, Kwang-woon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea.
- Nano Genesis Inc., 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea
| | - Nabil H Bhuiyan
- Bio IT Convergence Laboratory, Department of Electronic Convergence Engineering, Kwang-woon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea.
| | - Joon S Shim
- Bio IT Convergence Laboratory, Department of Electronic Convergence Engineering, Kwang-woon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea.
- Nano Genesis Inc., 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea
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9
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Sun M, Xu Z, Qu S, Liu L, Zhu Q, Xu W. Synaptic Transistors Using Scalable Graphene Nanoribbons. J Phys Chem Lett 2024; 15:8956-8963. [PMID: 39185714 DOI: 10.1021/acs.jpclett.4c02149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
Graphene has demonstrated potential for use in neuromorphic electronics due to its superior electrical properties. However, these devices are all based on graphene sheets without patterning, restricting its applications. Here, we demonstrate a graphene nanoribbon synaptic transistor (GNST), with the graphene nanoribbon (GNR) channels fabricated using an electro-hydrodynamically printed nanowire array as lithographic masks for scalable fabrication. The GNST shows tunable synaptic plasticity by spike duration, frequency, and number. Moreover, the device is energy-efficient and ambipolar and shows a regulated response by nanoribbon width. The characteristics of GNSTs are applicable to pattern recognition, showing an accuracy of 84.5%. The device is applicable to Pavlov's classical conditioning. This study reports the first synaptic transistor based on GNRs, providing new insights into future neuromorphic electronics.
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Affiliation(s)
- Mingxin Sun
- Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen 518000, China
| | - Zhipeng Xu
- Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen 518000, China
| | - Shangda Qu
- Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen 518000, China
| | - Lu Liu
- Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen 518000, China
| | - Qingshan Zhu
- Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen 518000, China
| | - Wentao Xu
- Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin 300350, China
- Shenzhen Research Institute of Nankai University, Shenzhen 518000, China
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10
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Garg M, Guo H, Maclam E, Zhanov E, Samudrala S, Pavlov A, Rahman MS, Namkoong M, Moreno JP, Tian L. Molecularly Imprinted Wearable Sensor with Paper Microfluidics for Real-Time Sweat Biomarker Analysis. ACS APPLIED MATERIALS & INTERFACES 2024; 16:46113-46122. [PMID: 39178237 PMCID: PMC11378148 DOI: 10.1021/acsami.4c10033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2024]
Abstract
The urgent need for real-time and noninvasive monitoring of health-associated biochemical parameters has motivated the development of wearable sweat sensors. Existing electrochemical sensors show promise in real-time analysis of various chemical biomarkers. These sensors often rely on labels and redox probes to generate and amplify the signals for the detection and quantification of analytes with limited sensitivity. In this study, we introduce a molecularly imprinted polymer (MIP)-based biochemical sensor to quantify a molecular biomarker in sweat using electrochemical impedance spectroscopy, which eliminates the need for labels or redox probes. The molecularly imprinted biosensor can achieve sensitive and specific detection of cortisol at concentrations as low as 1 pM, 1000-fold lower than previously reported MIP cortisol sensors. We integrated multimodal electrochemical sensors with an iontophoresis sweat extraction module and paper microfluidics for real-time sweat analysis. Several parameters can be simultaneously quantified, including sweat volume, secretion rate, sodium ion, and cortisol concentration. Paper microfluidic modules not only quantify sweat volume and secretion rate but also facilitate continuous sweat analysis without user intervention. While we focus on cortisol sensing as a proof-of-concept, the molecularly imprinted wearable sensors can be extended to real-time detection of other biochemicals, such as protein biomarkers and therapeutic drugs.
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Affiliation(s)
- Mayank Garg
- Department of Biomedical Engineering, Texas A&M University, College Station 77843, Texas, United States
| | - Heng Guo
- Department of Biomedical Engineering, Texas A&M University, College Station 77843, Texas, United States
| | - Ethan Maclam
- Department of Biomedical Engineering, Texas A&M University, College Station 77843, Texas, United States
| | - Elizabeth Zhanov
- Department of Biomedical Engineering, Texas A&M University, College Station 77843, Texas, United States
| | - Sathwika Samudrala
- Department of Biomedical Engineering, Texas A&M University, College Station 77843, Texas, United States
| | - Anton Pavlov
- Department of Biomedical Engineering, Texas A&M University, College Station 77843, Texas, United States
| | - Md Saifur Rahman
- Department of Biomedical Engineering, Texas A&M University, College Station 77843, Texas, United States
| | - Myeong Namkoong
- Department of Biomedical Engineering, Texas A&M University, College Station 77843, Texas, United States
| | - Jennette P Moreno
- Department of Pediatrics-Nutrition, Baylor College of Medicine, Houston 77030, Texas, United States
| | - Limei Tian
- Department of Biomedical Engineering, Texas A&M University, College Station 77843, Texas, United States
- Center for Remote Health Technologies and Systems, Texas A&M University, College Station 77843, Texas, United States
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11
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Zhong H, Lu X, Yang R, Pan Y, Lin J, Kim M, Chen S, Li MG. Seeing Through Muddy Water: Laser-Induced Graphene for Portable Tomography Imaging. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2406905. [PMID: 39007503 DOI: 10.1002/advs.202406905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Indexed: 07/16/2024]
Abstract
Due to its outstanding physical and chemical properties, graphene synthesized by laser scribing on polyimide (PI) offers excellent opportunities for photothermal applications, antiviral and antibacterial surfaces, and electrochemical storage and sensing. However, the utilization of such graphene for imaging is yet to be explored. Herein, using chemically durable and electrically conductive laser-induced graphene (LIG) for tomography imaging in aqueous suspensions is proposed. These graphene electrodes are designed as impedance imaging units for four-terminal electrical measurements. Using the real-time portable imaging prototypes, the conductive and dielectric objects can be seen in clear and muddy water with equivalent impedance modeling. This low-cost graphene tomography measurement system offers significant advantages over traditional visual cameras, in which the suspended muddy particles hinder the imaging resolution. This research shows the potential of applying graphene nanomaterials in emerging marine technologies, such as underwater robotics and automatic fisheries.
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Affiliation(s)
- Haosong Zhong
- Center on Smart Manufacturing, Division of Integrative Systems and Design, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Xupeng Lu
- Center on Smart Manufacturing, Division of Integrative Systems and Design, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Rongliang Yang
- Center on Smart Manufacturing, Division of Integrative Systems and Design, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Yexin Pan
- Center on Smart Manufacturing, Division of Integrative Systems and Design, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jing Lin
- Center on Smart Manufacturing, Division of Integrative Systems and Design, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Minseong Kim
- Center on Smart Manufacturing, Division of Integrative Systems and Design, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Siyu Chen
- Center on Smart Manufacturing, Division of Integrative Systems and Design, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Mitch Guijun Li
- Center on Smart Manufacturing, Division of Integrative Systems and Design, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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12
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Gal S, Cabaleiro D, Hassen W, Nasri A, Lafue Y, Pham-Huu C, Ba H, Estellé P. Thermophysical Profile of Industrial Graphene Water-Based Nanofluids. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1401. [PMID: 39269064 PMCID: PMC11397638 DOI: 10.3390/nano14171401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2024] [Revised: 08/21/2024] [Accepted: 08/26/2024] [Indexed: 09/15/2024]
Abstract
The exceptional properties of high-grade graphene make it an ideal candidate for thermal dissipation and heat exchange in energy applications and nanofluid development. Here, we present a comprehensive study of few-layer graphene (FLG) nanofluids prepared in an industrial context. FLG nanofluids were synthesized through an ultrasound-assisted mechanical exfoliation process of graphite in water with a green solvent. This method produces FLG of high structural quality and stable nanofluids, as demonstrated by electron microscope, dynamic light scattering and ζeta potential analyses. Thermal conductivity measurements of FLG-based nanofluids were conducted in the temperature range of 283.15 K to 313.15 K, with FLG concentrations ranging from 0.005 to 0.200% in wt. The thermal conductivity of FLG nanofluids is up to 20% higher than water. The modeling of nanofluid thermal conductivity reveals that this enhancement is supported by the influence of the thermal resistance at the FLG interface, and the content, average dimensions and flatness of FLG sheets; this latter varying with the FLG concentration in the nanofluid. Additionally, the density and heat capacity of FLG suspensions were measured and compared with theoretical models, and the rheological behavior of FLG nanofluids was evaluated. This behavior is mainly Newtonian, with a weak 5% viscosity increase.
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Affiliation(s)
- Soulayma Gal
- LGCGM, University Rennes, 35000 Rennes, France
- LMES, Université de Monastir, Monastir 5000, Tunisia
| | | | - Walid Hassen
- LMES, Université de Monastir, Monastir 5000, Tunisia
| | | | | | - Cuong Pham-Huu
- ICPPEES, Université de Strasbourg et Centre National de Recherche Scientifique, 67000 Strasbourg, France
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13
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Qing J, Wang S, Gu S, Lin L, Xie Q, Li D, Huang W, Guo J. Graphene-PbS Quantum Dot Heterostructure for Broadband Photodetector with Enhanced Sensitivity. SENSORS (BASEL, SWITZERLAND) 2024; 24:5508. [PMID: 39275419 PMCID: PMC11397984 DOI: 10.3390/s24175508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2024] [Revised: 08/16/2024] [Accepted: 08/17/2024] [Indexed: 09/16/2024]
Abstract
Photodetectors converting light into electrical signals are crucial in various applications. The pursuit of high-performance photodetectors with high sensitivity and broad spectral range simultaneously has always been challenging in conventional semiconductor materials. Graphene, with its zero bandgap and high electron mobility, is an attractive candidate, but its low light absorption coefficient restricts its practical application in light detection. Integrating graphene with light-absorbing materials like PbS quantum dots (QDs) can potentially enhance its photodetection capabilities. Here, this work presents a broadband photodetector with enhanced sensitivity based on a graphene-PbS QD heterostructure. The device leverages the high carrier mobility of graphene and the strong light absorption of PbS QDs, achieving a wide detection range from ultraviolet to near-infrared. Employing a simple spinning method, the heterostructure demonstrates ultrahigh responsivity up to the order of 107 A/W and a specific detectivity on the order of 1013 Jones, showcasing significant potential for photoelectric applications.
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Affiliation(s)
- Jincheng Qing
- School of Electronic Information and Electrical Engineering, Institute of Advanced Study, Chengdu University, Chengdu 610106, China
| | - Shicai Wang
- School of Integrated Circuit Science and Engineering (Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Shuyi Gu
- School of Electronic Information and Electrical Engineering, Institute of Advanced Study, Chengdu University, Chengdu 610106, China
| | - Lin Lin
- School of Integrated Circuit Science and Engineering (Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Qinpei Xie
- School of Electronic Information and Electrical Engineering, Institute of Advanced Study, Chengdu University, Chengdu 610106, China
| | - Daming Li
- School of Electronic Information and Electrical Engineering, Institute of Advanced Study, Chengdu University, Chengdu 610106, China
| | - Wen Huang
- School of Integrated Circuit Science and Engineering (Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Junxiong Guo
- School of Electronic Information and Electrical Engineering, Institute of Advanced Study, Chengdu University, Chengdu 610106, China
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
- Chengdu Research Institute of UESTC, Chengdu 610207, China
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14
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Ferreras A, Matesanz A, Mendizabal J, Artola K, Nishina Y, Acedo P, Jorcano JL, Ruiz A, Reina G, Martín C. Light-Responsive and Antibacterial Graphenic Materials as a Holistic Approach to Tissue Engineering. ACS NANOSCIENCE AU 2024; 4:263-272. [PMID: 39184835 PMCID: PMC11342345 DOI: 10.1021/acsnanoscienceau.4c00006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 05/30/2024] [Accepted: 05/30/2024] [Indexed: 08/27/2024]
Abstract
While the continuous development of advanced bioprinting technologies is under fervent study, enhancing the regenerative potential of hydrogel-based constructs using external stimuli for wound dressing has yet to be tackled. Fibroblasts play a significant role in wound healing and tissue implants at different stages, including extracellular matrix production, collagen synthesis, and wound and tissue remodeling. This study explores the synergistic interplay between photothermal activity and nanomaterial-mediated cell proliferation. The use of different graphene-based materials (GBM) in the development of photoactive bioinks is investigated. In particular, we report the creation of a skin-inspired dressing for wound healing and regenerative medicine. Three distinct GBM, namely, graphene oxide (GO), reduced graphene oxide (rGO), and graphene platelets (GP), were rigorously characterized, and their photothermal capabilities were elucidated. Our investigations revealed that rGO exhibited the highest photothermal efficiency and antibacterial properties when irradiated, even at a concentration as low as 0.05 mg/mL, without compromising human fibroblast viability. Alginate-based bioinks alongside human fibroblasts were employed for the bioprinting with rGO. The scaffold did not affect the survival of fibroblasts for 3 days after bioprinting, as cell viability was not affected. Remarkably, the inclusion of rGO did not compromise the printability of the hydrogel, ensuring the successful fabrication of complex constructs. Furthermore, the presence of rGO in the final scaffold continued to provide the benefits of photothermal antimicrobial therapy without detrimentally affecting fibroblast growth. This outcome underscores the potential of rGO-enhanced hydrogels in tissue engineering and regenerative medicine applications. Our findings hold promise for developing game-changer strategies in 4D bioprinting to create smart and functional tissue constructs with high fibroblast proliferation and promising therapeutic capabilities in drug delivery and bactericidal skin-inspired dressings.
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Affiliation(s)
- Andrea Ferreras
- Department
of Bioengineering, Universidad Carlos III
de Madrid, Leganés 28911, Spain
| | - Ana Matesanz
- Department
of Electronic Technology, Universidad Carlos
III de Madrid, Leganés 28911, Spain
| | - Jabier Mendizabal
- Domotek
ingeniería prototipado y formación S.L., San Sebastián 20003, Spain
| | - Koldo Artola
- Domotek
ingeniería prototipado y formación S.L., San Sebastián 20003, Spain
| | - Yuta Nishina
- Graduate
School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
- Research
Core for Interdisciplinary Sciences, Okayama
University, Okayama 700-8530, Japan
| | - Pablo Acedo
- Department
of Electronic Technology, Universidad Carlos
III de Madrid, Leganés 28911, Spain
| | - José L. Jorcano
- Department
of Bioengineering, Universidad Carlos III
de Madrid, Leganés 28911, Spain
- Instituto
de Investigación Sanitaria Gregorio Marañón, Madrid 28007, Spain
| | - Amalia Ruiz
- Institute
of Cancer Therapeutics, School of Pharmacy and Medical Sciences, Faculty
of Life Sciences, University of Bradford, Bradford BD7 1DP, United Kingdom
| | - Giacomo Reina
- Empa
Swiss Federal Laboratories for Materials Science and Technology, St. Gallen 9014, Switzerland
| | - Cristina Martín
- Department
of Bioengineering, Universidad Carlos III
de Madrid, Leganés 28911, Spain
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15
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Berholts A, Kodu M, Rubin P, Kahro T, Alles H, Jaaniso R. Layered Heterostructure of Graphene and TiO 2 as a Highly Sensitive and Stable Photoassisted NO 2 Sensor. ACS APPLIED MATERIALS & INTERFACES 2024; 16:43827-43837. [PMID: 39110038 PMCID: PMC11345727 DOI: 10.1021/acsami.4c08151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 07/25/2024] [Accepted: 07/26/2024] [Indexed: 08/23/2024]
Abstract
As an atomically thin electric conductor with a low density of highly mobile charge carriers, graphene is a suitable transducer for molecular adsorption. In this study, we demonstrate that the adsorption properties can be significantly enhanced with a laser-deposited TiO2 nanolayer on top of single-layer CVD graphene, whereas the effective charge transfer between the TiO2-adsorbed gas molecules and graphene is retained through the interface. The formation of such a heterostructure with optimally a monolayer thick oxide combined with ultraviolet irradiation (wavelength 365 nm, intensity <1 mW/mm2) dramatically enhances the gas-sensing properties. It provides an outstanding sensitivity for detecting NO2 in the range of a few ppb to a few hundred ppb-s in air, with response times below 30 s at room temperature. The effect of visible light (436 and 546 nm) was much weaker, indicating that the excitations due to light absorption in TiO2 play an essential role, while the characteristics of gas responses imply the involvement of both photoinduced adsorption and desorption. The sensing mechanism was confirmed by theoretical simulations on a NO2@Ti8O16C50 complex under periodic boundary conditions. The proposed sensor structure has significant additional merits, such as relative insensitivity to other polluting gases (CO, SO2, NH3) and air humidity, as well as long-term stability (>2 years) in ambient air. The results pave the way for an emerging class of gas sensor structures based on stacked 2D materials incorporating highly charge-sensitive transducer and selective receptor layers.
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Affiliation(s)
- Artjom Berholts
- Institute of Physics, University of Tartu, W. Ostwald Street 1, Tartu 50411, Estonia
| | - Margus Kodu
- Institute of Physics, University of Tartu, W. Ostwald Street 1, Tartu 50411, Estonia
| | - Pavel Rubin
- Institute of Physics, University of Tartu, W. Ostwald Street 1, Tartu 50411, Estonia
| | - Tauno Kahro
- Institute of Physics, University of Tartu, W. Ostwald Street 1, Tartu 50411, Estonia
| | - Harry Alles
- Institute of Physics, University of Tartu, W. Ostwald Street 1, Tartu 50411, Estonia
| | - Raivo Jaaniso
- Institute of Physics, University of Tartu, W. Ostwald Street 1, Tartu 50411, Estonia
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16
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Sun L, Chen X, Zhou M, Gao J, Luo C, Li X, You S, Wang M, Cheng G. Optimization of Cyanide-Free Composite Electrodeposition Based on π-π Interactions Preparation of Silver-Graphene Composite Coatings for Electrical Contact Materials. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1349. [PMID: 39195387 DOI: 10.3390/nano14161349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2024] [Revised: 08/02/2024] [Accepted: 08/13/2024] [Indexed: 08/29/2024]
Abstract
With the rapid development of industrial automation and power electronics, the requirements for electrical contact materials are increasing. However, traditional electrical contact materials encountered significant bottlenecks in terms of performance enhancement and production environmental friendliness. Therefore, this paper proposes a new material design idea that utilizes π-π interactions between graphene and compounds with conjugated structures in order to achieve uniform dispersion of graphene in the metal matrix and thus enhance the performance of composites. Based on this design idea, we used nicotinic acid, which has a conjugated structure and is safe, as the complexing agent, and successfully prepared high-quality silver-graphene (Ag-G) composite coatings with graphene uniformly dispersed in the metal matrix on copper substrates by composite electrodeposition technique. Subsequently, the mechanical properties of composite coatings were investigated by hardness test and X-ray diffractometer, and the tribological properties of the composite coatings and the comprehensive performance under the current carrying conditions were systematically evaluated by using friction and wear tester and load key life tester. The results show that the Ag-G composite coatings have significant advantages in mechanical, tribological, and current carrying conditions. This result not only verifies the feasibility of the design idea of the material, but also provides a new direction for the research and development of electrical contact materials.
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Affiliation(s)
- Luyi Sun
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Guangxi Earthmoving Machinery Collaborative Innovation Center, Liuzhou 545006, China
- Guangxi Tsinglube New Material Technology Co., Ltd., 279 Feilu Avenue, Luzhai County, Liuzhou 545006, China
| | - Xin Chen
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Guangxi Earthmoving Machinery Collaborative Innovation Center, Liuzhou 545006, China
- Guangxi Tsinglube New Material Technology Co., Ltd., 279 Feilu Avenue, Luzhai County, Liuzhou 545006, China
| | - Ming Zhou
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Guangxi Earthmoving Machinery Collaborative Innovation Center, Liuzhou 545006, China
- Guangxi Tsinglube New Material Technology Co., Ltd., 279 Feilu Avenue, Luzhai County, Liuzhou 545006, China
| | - Jingwei Gao
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Guangxi Earthmoving Machinery Collaborative Innovation Center, Liuzhou 545006, China
- Guangxi Tsinglube New Material Technology Co., Ltd., 279 Feilu Avenue, Luzhai County, Liuzhou 545006, China
| | - Chaogui Luo
- Guangxi Tsinglube New Material Technology Co., Ltd., 279 Feilu Avenue, Luzhai County, Liuzhou 545006, China
- Guangxi Jianxing Guangyin New Material Technology Co., Ltd., Nanning 530024, China
| | - Xiao Li
- Chengdu Carbon Co., Ltd., Chengdu 610100, China
| | - Shengli You
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Mingyue Wang
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Gangqiang Cheng
- School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
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17
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Jiang X, Yin J, Liu L, Wu K. Electrochemical detection of nitrofurazone using laser-engraved three-electrode graphene array. Anal Chim Acta 2024; 1317:342898. [PMID: 39030002 DOI: 10.1016/j.aca.2024.342898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 06/19/2024] [Accepted: 06/21/2024] [Indexed: 07/21/2024]
Abstract
BACKGROUND Nitrofurazone (NFZ) is a widely-used antimicrobial agent in aquaculture. The NFZ residue can be transmitted to humans through the food chain, and cause adverse health effects including carcinogenesis and teratogenesis. Until now, a number of modified electrodes have been developed for NFZ detection, however, there are some issues that need to be improved. For example, the reported detection sensitivity is relatively low, the modification procedure is complicated, and conventional three-electrode system is used. Therefore, it is quite important to develop new NFZ detection method with higher sensitivity, simplicity and practicality. RESULTS Herein, a kind of integrated three-electrode array consisted with porous graphene is easily prepared through laser engraving of commercial polyimide tape. Five kinds of graphene arrays were prepared at different laser power percentage (i.e. 30 %, 40 %, 50 %, 60 % and 70 %). It is found that their structure, morphology, fluffiness and porosity show great difference, consequently affecting the electrochemical performance of graphene arrays such as conductivity, active area and electron transfer ability. The engraved graphene array at 50 % laser power percentage (LIG-50 array) is superior owing to uniform 3D structure, abundant pores and high stability. More importantly, LIG-50 array is more active for NFZ oxidation, and significantly enhances the detection sensitivity. The linear range of LIG-50 sensor is from 0.2 to 8 μM, and the detection limit is 0.035 μM, which is successfully used in fish meat samples. SIGNIFICANCE A sensitive, portable and practical electrochemical sensor has been successfully developed for NFZ using laser-engraved graphene array. The demonstration using fish meat samples manifests this new sensor has good accuracy and great potential in application. This study could provide a new possibility for the design and fabrication of other high-performance electrochemical sensor for various applications in the future.
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Affiliation(s)
- Xingyue Jiang
- Hubei Province Key Laboratory of Biotechnology of Chinese Traditional Medicine, College of Health Science and Engineering, Hubei University, Wuhan, 430062, China; College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
| | - Jiaxi Yin
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Lingbo Liu
- Hubei Province Key Laboratory of Biotechnology of Chinese Traditional Medicine, College of Health Science and Engineering, Hubei University, Wuhan, 430062, China.
| | - Kangbing Wu
- Hubei Province Key Laboratory of Biotechnology of Chinese Traditional Medicine, College of Health Science and Engineering, Hubei University, Wuhan, 430062, China; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
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18
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Wu F, Liu X, Wang S, Hu L, Kunze S, Xue Z, Shen Z, Yang Y, Wang X, Fan M, Pan H, Gao X, Yao T, Wu Y. Identification of K +-determined reaction pathway for facilitated kinetics of CO 2 electroreduction. Nat Commun 2024; 15:6972. [PMID: 39143059 PMCID: PMC11324943 DOI: 10.1038/s41467-024-50927-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 07/24/2024] [Indexed: 08/16/2024] Open
Abstract
Cations such as K+ play a key part in the CO2 electroreduction reaction, but their role in the reaction mechanism is still in debate. Here, we use a highly symmetric Ni-N4 structure to selectively probe the mechanistic influence of K+ and identify its interaction with chemisorbed CO2-. Our electrochemical kinetics study finds a shift in the rate-determining step in the presence of K+. Spectral evidence of chemisorbed CO2- from in-situ X-ray absorption spectroscopy and in-situ Raman spectroscopy pinpoints the origin of this rate-determining step shift. Grand canonical potential kinetics simulations - consistent with experimental results - further complement these findings. We thereby identify a long proposed non-covalent interaction between K+ and chemisorbed CO2-. This interaction stabilizes chemisorbed CO2- and thus switches the rate-determining step from concerted proton electron transfer to independent proton transfer. Consequently, this rate-determining step shift lowers the reaction barrier by eliminating the contribution of the electron transfer step. This K+-determined reaction pathway enables a lower energy barrier for CO2 electroreduction reaction than the competing hydrogen evolution reaction, leading to an exclusive selectivity for CO2 electroreduction reaction.
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Affiliation(s)
- Feng Wu
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui, China
- Deep Space Exploration Laboratory, Hefei, China
| | - Xiaokang Liu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
| | - Shiqi Wang
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui, China
- Deep Space Exploration Laboratory, Hefei, China
| | - Longfei Hu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China
| | - Sebastian Kunze
- Department of Chemistry, Seoul National University, Seoul, South Korea
| | - Zhenggang Xue
- NEST Lab., Department of Physics, College of Science, Shanghai University, Shanghai, China
| | - Zehao Shen
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui, China
- Deep Space Exploration Laboratory, Hefei, China
| | - Yaxiong Yang
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, China.
| | - Xinqiang Wang
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, China
| | - Minghui Fan
- the Instruments Center for Physical Science, University of Science and Technology of China, Hefei, China
| | - Hongge Pan
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, China
| | - Xiaoping Gao
- Deep Space Exploration Laboratory, Hefei, China.
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China.
| | - Tao Yao
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China.
| | - Yuen Wu
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui, China.
- Deep Space Exploration Laboratory, Hefei, China.
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19
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Wang Y, Zhang X, Zhu Y, Li X, Shen Z. Planar Micro-Supercapacitors with High Power Density Screen-Printed by Aqueous Graphene Conductive Ink. MATERIALS (BASEL, SWITZERLAND) 2024; 17:4021. [PMID: 39203199 PMCID: PMC11356036 DOI: 10.3390/ma17164021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Revised: 08/08/2024] [Accepted: 08/09/2024] [Indexed: 09/03/2024]
Abstract
Simple and scalable production of micro-supercapacitors (MSCs) is crucial to address the energy requirements of miniature electronics. Although significant advancements have been achieved in fabricating MSCs through solution-based printing techniques, the realization of high-performance MSCs remains a challenge. In this paper, graphene-based MSCs with a high power density were prepared through screen printing of aqueous conductive inks with appropriate rheological properties. High electrical conductivity (2.04 × 104 S∙m-1) and low equivalent series resistance (46.7 Ω) benefiting from the dense conductive network consisting of the mesoporous structure formed by graphene with carbon black dispersed as linkers, as well as the narrow finger width and interspace (200 µm) originating from the excellent printability, prompted the fully printed MSCs to deliver high capacitance (9.15 mF∙cm-2), energy density (1.30 µWh∙cm-2) and ultrahigh power density (89.9 mW∙cm-2). Notably, the resulting MSCs can effectively operate at scan rates up to 200 V∙s-1, which surpasses conventional supercapacitors by two orders of magnitude. In addition, the MSCs demonstrate excellent cycling stability (91.6% capacity retention and ~100% Coulombic efficiency after 10,000 cycles) and extraordinary mechanical properties (92.2% capacity retention after 5000 bending cycles), indicating their broad application prospects in flexible wearable/portable electronic systems.
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Affiliation(s)
- Youchang Wang
- Beijing Key Laboratory for Powder Technology Research and Development, Beihang University, Beijing 100191, China; (Y.W.); (Y.Z.); (X.L.); (Z.S.)
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
| | - Xiaojing Zhang
- Beijing Key Laboratory for Powder Technology Research and Development, Beihang University, Beijing 100191, China; (Y.W.); (Y.Z.); (X.L.); (Z.S.)
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
| | - Yuwei Zhu
- Beijing Key Laboratory for Powder Technology Research and Development, Beihang University, Beijing 100191, China; (Y.W.); (Y.Z.); (X.L.); (Z.S.)
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
| | - Xiaolu Li
- Beijing Key Laboratory for Powder Technology Research and Development, Beihang University, Beijing 100191, China; (Y.W.); (Y.Z.); (X.L.); (Z.S.)
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
| | - Zhigang Shen
- Beijing Key Laboratory for Powder Technology Research and Development, Beihang University, Beijing 100191, China; (Y.W.); (Y.Z.); (X.L.); (Z.S.)
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
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20
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Mitra S, Hamada N, Mitra SK. Experimental observation and characterization of amorphous carbon generated in graphene on gold nanoparticles. RSC Adv 2024; 14:25307-25315. [PMID: 39139246 PMCID: PMC11318520 DOI: 10.1039/d4ra04893h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2024] [Accepted: 07/24/2024] [Indexed: 08/15/2024] Open
Abstract
The interaction of graphene with gold nanoparticles is investigated using transmission electron microscopy. We observe gold-nanoparticle-mediated etching of graphene flakes, often leading to hole formation. Further, using a combination of high-angle annular dark field imaging and electron energy loss spectroscopy, we highlight that the catalytic effects of gold nanoparticles on graphene lead to the formation of amorphous carbon layers. From the extracted diffractograms, we observe regions with diffraction halos as well as some regions with a weak tetrahedral motif. Using independently performed Raman measurements, we confirm the presence of tetrahedral amorphous carbon as well as mixed graphitic-amorphous regions. For the amorphous carbon regions with mixed sp2-sp3 states, the Raman G peak is red-shifted to 1564 cm-1 and an I D/I G ratio of 0.63 indicates less than 20% sp3 content. For the tetrahedral amorphous carbon regions, we observe that the Raman G peak is at 1580 cm-1, close to that of monolayer graphene. However, there is no Raman D peak, i.e., I D/I G = 0, which indicates close to 100% sp3 content. The translation of the Raman G peak location and the I D/I G ratios is on par with the amorphization trajectory analysis of Ferrari and Robertson (Phys. Rev. B: Condens. Matter Mater. Phys., 2000, 61, 14095) and validates the conversion route of graphite to amorphous carbon to tetrahedral amorphous carbon. The presented method provides a promising pathway for creating defect-induced amorphous carbon at room temperature, which has a broader impact on the electronics and semiconductor industries.
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Affiliation(s)
- Surjyasish Mitra
- Department of Mechanical & Mechatronics Engineering, Waterloo Institute for Nanotechnology, University of Waterloo Waterloo Ontario N2L 3G1 Canada
| | - Natalie Hamada
- Canadian Centre for Electron Microscopy, McMaster University 1280 Main St W Hamilton ON L8S 4L8 Canada
| | - Sushanta K Mitra
- Department of Mechanical & Mechatronics Engineering, Waterloo Institute for Nanotechnology, University of Waterloo Waterloo Ontario N2L 3G1 Canada
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21
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Hu X, Wang Y, Yuan J, Liao X, Zhou Y. Spectroscopic Analysis on Different Stacking Configurations of Multilayered MoSe 2. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3998. [PMID: 39203176 PMCID: PMC11356233 DOI: 10.3390/ma17163998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Revised: 08/05/2024] [Accepted: 08/08/2024] [Indexed: 09/03/2024]
Abstract
Transition metal dichalcogenides (TMDs) are drawing significant attention due to their intriguing photoelectric properties, and these interesting properties are closely related to the number of layers. Obtaining layer-controlled and high-quality TMD is still a challenge. In this context, we use the salt-assisted chemical vapor deposition to grow multilayered MoSe2 flake and characterize it by Raman spectroscopy, second harmonic generation, and photon luminescence. Spectroscopic analysis is an effective way to characterize the stacking order and optoelectronic properties of two-dimensional materials. Notably, the corresponding mapping reflects the film quality and homogeneity. We found that the grown continuous monolayer, bilayer, and trilayer of MoSe2 sheets with different stacking orders exhibit distinctive features. For bilayer MoSe2, the most stable stacking configurations are the AA' and AB order. And the uniformity of the spectroscopy maps demonstrates the high quality of the stacked MoSe2 sheets.
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Affiliation(s)
- Xiang Hu
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, China (J.Y.); (Y.Z.)
- Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang 330031, China
| | - Yong Wang
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, China (J.Y.); (Y.Z.)
- Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang 330031, China
| | - Jiaren Yuan
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, China (J.Y.); (Y.Z.)
- Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang 330031, China
| | - Xiaxia Liao
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, China (J.Y.); (Y.Z.)
- Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang 330031, China
| | - Yangbo Zhou
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, China (J.Y.); (Y.Z.)
- Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang 330031, China
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22
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Iravani M, Simjoo M, Chahardowli M, Moghaddam AR. Experimental insights into the stability of graphene oxide nanosheet and polymer hybrid coupled by ANOVA statistical analysis. Sci Rep 2024; 14:18448. [PMID: 39117655 PMCID: PMC11310414 DOI: 10.1038/s41598-024-68218-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 07/22/2024] [Indexed: 08/10/2024] Open
Abstract
The synergistic potential of using graphene oxide (GO) nanosheets and hydrolyzed polyacrylamide (HPAM) as GO enhanced polymer hybrid (GOeP) for enhancing oil recovery (EOR) purposes has drawn attention. However, the hybridization method and stability of GOeP have not been comprehensively studied. To cover this gap, the current study evaluates the stability of GOeP under different conditions, including temperatures such as 60 and 80 °C, high and low salinities, and the presence of Mg2+ ions (6430 and 643 ppm). Hence, GO nanosheets were synthesized and characterized through XRD, Raman, FTIR, and DLS techniques. The performance of five preparation methods was assessed to determine their ability to produce stable hybrids. Zeta potential and sedimentation methods, coupled with the ANOVA statistical technique, were used for measuring and interpreting stability for 21 days. Results revealed that the stability of GOeP in the presence of brine is influenced by hydrolyzation duration, the composition of the water used in polymer hydrolyzation, the form of additives (being powdery or in aqueous solution), and the dispersion quality, including whether the GO solution was prediluted. The results revealed that the positive impact of higher temperatures on the long-term stability of GOeP is approximately seven times less significant than the reduction in stability caused by salinity. Under elevated salinity conditions, a higher Mg2+ concentration led to an 80% decrease in long-term stability, whereas the temperature impact was negligible. These findings highlight the potential of GOeP for EOR applications, offering insights into optimizing stability under challenging reservoir conditions.
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Affiliation(s)
- M Iravani
- Faculty of Petroleum and Natural Gas Engineering, Sahand University of Technology, Tabriz, Iran
| | - M Simjoo
- Faculty of Petroleum and Natural Gas Engineering, Sahand University of Technology, Tabriz, Iran.
| | - M Chahardowli
- Faculty of Petroleum and Natural Gas Engineering, Sahand University of Technology, Tabriz, Iran
| | - A Rezvani Moghaddam
- Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
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23
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Caffrey E, Munuera JM, Carey T, Coleman JN. Quantifying the effect of nanosheet dimensions on the piezoresistive response of printed graphene nanosheet networks. NANOSCALE HORIZONS 2024. [PMID: 39101455 DOI: 10.1039/d4nh00224e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
Printed networks of 2D nanosheets have found a range of applications in areas including electronic devices, energy storage systems and sensors. For example, the ability to print graphene networks onto flexible substrates enables the production of high-performance strain sensors. The network resistivity is known to be sensitive to the nanosheet dimensions which implies the piezoresistance might also be size-dependent. In this study, the effect of nanosheet thickness on the piezoresistive response of nanosheet networks has been investigated. To achieve this, we liquid-exfoliated graphene nanosheets which were then subjected to centrifugation-based size selection followed by spray deposition onto flexible substrates. The resultant devices show increasing resistivity and gauge factor with increasing nanosheet thickness. We analyse the resistivity versus thickness data using a recently reported model and develop a new model to fit the gauge factor versus thickness data. This analysis allowed us to differentiate between the effect of strain on inter-nanosheet junctions and the straining of the individual nanosheets within the network. Surprisingly, our data implies the nanosheets themselves to display a negative piezo response.
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Affiliation(s)
- Eoin Caffrey
- School of Physics, CRANN & AMBER Research Centres, Trinity College Dublin, Dublin 2, Ireland.
| | - Jose M Munuera
- School of Physics, CRANN & AMBER Research Centres, Trinity College Dublin, Dublin 2, Ireland.
- Physics Department, University of Oviedo, C/Federico García Lorca no 18, 33007 Oviedo, Spain
| | - Tian Carey
- School of Physics, CRANN & AMBER Research Centres, Trinity College Dublin, Dublin 2, Ireland.
| | - Jonathan N Coleman
- School of Physics, CRANN & AMBER Research Centres, Trinity College Dublin, Dublin 2, Ireland.
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24
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Chen Y, Shi Z, Lv B, Zhang W, Zhang S, Zang H, Yue Y, Jiang K, Ben J, Jia Y, Liu M, Lu S, Sun R, Wu T, Li S, Sun X, Li D. In Situ Growth of Wafer-Scale Patterned Graphene and Fabrication of Optoelectronic Artificial Synaptic Device Array Based on Graphene/n-AlGaN Heterojunction for Visual Learning. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2401150. [PMID: 38506563 DOI: 10.1002/smll.202401150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/10/2024] [Indexed: 03/21/2024]
Abstract
The unique optical and electrical properties of graphene-based heterojunctions make them significant for artificial synaptic devices, promoting the advancement of biomimetic vision systems. However, mass production and integration of device arrays are necessary for visual imaging, which is still challenging due to the difficulty in direct growth of wafer-scale graphene patterns. Here, a novel strategy is proposed using photosensitive polymer as a solid carbon source for in situ growth of patterned graphene on diverse substrates. The growth mechanism during high-temperature annealing is elucidated, leading to wafer-scale graphene patterns with exceptional uniformity, ideal crystalline quality, and precise control over layer number by eliminating the release of volatile from oxygen-containing resin. The growth strategy enables the fabrication of two-inch optoelectronic artificial synaptic device array based on graphene/n-AlGaN heterojunction, which emulates key functionalities of biological synapses, including short-term plasticity, long-term plasticity, and spike-rate-dependent plasticity. Moreover, the mimicry of visual learning in the human brain is attributed to the regulation of excitatory and inhibitory post-synapse currents, following a learning rule that prioritizes initial recognition before memory formation. The duration of long-term memory reaches 10 min. The in situ growth strategy for patterned graphene represents the novelty for fabricating fundamental hardware of an artificial neuromorphic system.
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Affiliation(s)
- Yang Chen
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Zhiming Shi
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Bingchen Lv
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Wei Zhang
- Key Laboratory of Automobile Materials of MOE, School of Materials Science & Engineering, Jilin University, Changchun, 130012, P. R. China
| | - Shanli Zhang
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Hang Zang
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Yuanyuan Yue
- School of Management Science and Information Engineering, Jilin University of Finance and Economics, Changchun, 130117, P. R. China
| | - Ke Jiang
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Jianwei Ben
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Yuping Jia
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Mingrui Liu
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Shunpeng Lu
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Rui Sun
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Tong Wu
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Shaojuan Li
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Xiaojuan Sun
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
| | - Dabing Li
- State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, P. R. China
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25
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Fang Z, Hu J, Xu MY, Li SW, Li C, Zhou X, Wei J. A biocompatible electrode/exoelectrogens interface augments bidirectional electron transfer and bioelectrochemical reactions. Bioelectrochemistry 2024; 158:108723. [PMID: 38733720 DOI: 10.1016/j.bioelechem.2024.108723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/28/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024]
Abstract
Bidirectional electron transfer is about that exoelectrogens produce bioelectricity via extracellular electron transfer at anode and drive cytoplasmic biochemical reactions via extracellular electron uptake at cathode. The key factor to determine above bioelectrochemical performances is the electron transfer efficiency under biocompatible abiotic/biotic interface. Here, a graphene/polyaniline (GO/PANI) nanocomposite electrode specially interfacing exoelectrogens (Shewanella loihica) and augmenting bidirectional electron transfer was conducted by in-situ electrochemical modification on carbon paper (CP). Impressively, the GO/PANI@CP electrode tremendously improved the performance of exoelectrogens at anode for wastewater treatment and bioelectricity generation (about 54 folds increase of power density compared to blank CP electrode). The bacteria on electrode surface not only showed fast electron release but also exhibited high electricity density of extracellular electron uptake through the proposed direct electron transfer pathway. Thus, the cathode applications of microbial electrosynthesis and bio-denitrification were developed via GO/PANI@CP electrode, which assisted the close contact between microbial outer-membrane cytochromes and nanocomposite electrode for efficient nitrate removal (0.333 mM/h). Overall, nanocomposite modified electrode with biocompatible interfaces has great potential to enhance bioelectrochemical reactions with exoelectrogens.
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Affiliation(s)
- Zhen Fang
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jiani Hu
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Meng-Yuan Xu
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Shan-Wei Li
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, Jiangsu 215009, China
| | - Chunmei Li
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiangtong Zhou
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, Jiangsu 215009, China.
| | - Jing Wei
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, Jiangsu 215009, China
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26
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Kaur A, Morton JA, Tyurnina AV, Priyadarshi A, Ghorbani M, Mi J, Porfyrakis K, Eskin DG, Tzanakis I. Dual frequency ultrasonic liquid phase exfoliation method for the production of few layer graphene in green solvents. ULTRASONICS SONOCHEMISTRY 2024; 108:106954. [PMID: 38879962 PMCID: PMC11211887 DOI: 10.1016/j.ultsonch.2024.106954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/08/2024] [Accepted: 06/12/2024] [Indexed: 06/18/2024]
Abstract
In this work, we implement a dual frequency (24 kHz and 1174 kHz) ultrasonic assisted liquid phase exfoliation (ULPE) technique in deionized water (DIW) and other eco-friendly solvents, to produce a variety of high-quality few-layer graphene (FLG) solutions under controlled ultrasonication conditions. The resulting FLG dispersions of variable sizes (∼0.2-1.5 μm2) confirmed by characterisation techniques comprising UV-Vis spectroscopy, Raman spectroscopy and high-resolution transmission electron microscopy (HR-TEM). For the first time we demonstrate that high yield of FLG flakes with minimal defects, stable for 6 + months in a solution (stability ∼ 70 %), can be obtained in less than 1-hour of treatment in either water/ethanol (DIW:EtOH) or water/isopropyl alcohol (DIW:IPA) eco-friendly mixtures. We also scrutinized the underlying mechanisms of cavitation using high-speed imaging synchronized with acoustic pressure measurements. The addition of ethanol or IPA to deionized water is proposed to play a central role in exfoliation as it regulates the extend of the cavitation zone, the intensity of the ultrasonic field and, thus, the cavitation effectiveness. Our study revealed that lateral sizes of the obtained FLG depend on the choice of exfoliating media and the diameter of a sonotrode used. This variability offers flexibility in producing FLG of different sizes, applicable in a wide spectrum of size-specific applications.
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Affiliation(s)
- Amanpreet Kaur
- Faculty of Technology, Design and Environment, Oxford Brookes University, Headington, Oxford, OX3 0BP Wheatley, Oxford, OX33 1HX, UK.
| | - Justin A Morton
- Faculty of Technology, Design and Environment, Oxford Brookes University, Headington, Oxford, OX3 0BP Wheatley, Oxford, OX33 1HX, UK; Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, UK
| | - Anastasia V Tyurnina
- Brunel Centre for Advanced Solidification Technology, Brunel University London, Kingston Lane, London, UB8 3PH, UK
| | - Abhinav Priyadarshi
- Faculty of Technology, Design and Environment, Oxford Brookes University, Headington, Oxford, OX3 0BP Wheatley, Oxford, OX33 1HX, UK
| | - Morteza Ghorbani
- Faculty of Engineering and Natural Science, Sabanci University, 34956 Tuzla, Istanbul, Turkey
| | - Jiawei Mi
- Department of Engineering, University of Hull, Cottingham Rd, Hull, HU6 7RX, UK
| | - Kyriakos Porfyrakis
- Faculty of Engineering and Science, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK
| | - Dmitry G Eskin
- Brunel Centre for Advanced Solidification Technology, Brunel University London, Kingston Lane, London, UB8 3PH, UK
| | - Iakovos Tzanakis
- Faculty of Technology, Design and Environment, Oxford Brookes University, Headington, Oxford, OX3 0BP Wheatley, Oxford, OX33 1HX, UK; Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK.
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27
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Akhavan S, Najafabadi AT, Mignuzzi S, Jalebi MA, Ruocco A, Paradisanos I, Balci O, Andaji-Garmaroudi Z, Goykhman I, Occhipinti LG, Lidorikis E, Stranks SD, Ferrari AC. Graphene-Perovskite Fibre Photodetectors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2400703. [PMID: 38824387 DOI: 10.1002/adma.202400703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 05/13/2024] [Indexed: 06/03/2024]
Abstract
The integration of optoelectronic devices, such as transistors and photodetectors (PDs), into wearables and textiles is of great interest for applications such as healthcare and physiological monitoring. These require flexible/wearable systems adaptable to body motions, thus materials conformable to non-planar surfaces, and able to maintain performance under mechanical distortions. Here, fibre PDs are prepared by combining rolled graphene layers and photoactive perovskites. Conductive fibres (~500 Ωcm-1) are made by rolling single-layer graphene (SLG) around silica fibres, followed by deposition of a dielectric layer (Al2O3 and parylene C), another rolled SLG as a channel, and perovskite as photoactive component. The resulting gate-tunable PD has a response time~9ms, with an external responsivity~22kAW-1 at 488nm for a 1V bias. The external responsivity is two orders of magnitude higher, and the response time one order of magnitude faster, than state-of-the-art wearable fibre-based PDs. Under bending at 4mm radius, up to~80% photocurrent is maintained. Washability tests show~72% of initial photocurrent after 30 cycles, promising for wearable applications.
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Affiliation(s)
- S Akhavan
- Cambridge Graphene Centre, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0FA, UK
| | - A Taheri Najafabadi
- Cambridge Graphene Centre, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0FA, UK
| | - S Mignuzzi
- Cambridge Graphene Centre, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0FA, UK
| | - M Abdi Jalebi
- Cavendish Laboratory, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0HE, UK
| | - A Ruocco
- Cambridge Graphene Centre, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0FA, UK
- Optical Networks Group, University College London, London, WC1E 6BT, UK
| | - I Paradisanos
- Cambridge Graphene Centre, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0FA, UK
| | - O Balci
- Cambridge Graphene Centre, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0FA, UK
| | - Z Andaji-Garmaroudi
- Cavendish Laboratory, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0HE, UK
| | - I Goykhman
- Cambridge Graphene Centre, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0FA, UK
- Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - L G Occhipinti
- Cambridge Graphene Centre, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0FA, UK
| | - E Lidorikis
- Department of Materials Science and Engineering, University of Ioannina, Ioannina, 45110, Greece
| | - S D Stranks
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge, CB3 0AS, UK
| | - A C Ferrari
- Cambridge Graphene Centre, University of Cambridge, JJ Thompson Avenue, Cambridge, CB3 0FA, UK
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28
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Bhardwaj A, Okoroanyanwu U, Pagaduan JN, Fan W, Watkins JJ. Large-Area Fabrication of Porous Graphene Networks on Carbon Fabric via Millisecond Photothermal Processing of Polyaniline for Supercapacitors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2402049. [PMID: 38554015 DOI: 10.1002/smll.202402049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Indexed: 04/01/2024]
Abstract
Supercapacitors demonstrate promising potential for flexible, multi-functional energy storage devices; however, their widespread adoption is confronted by fabrication challenges. To access a combination of desirable device qualities such as flexibility, lightweight, structural stability, and enhanced electrochemical performance, carbon fiber (CF) can be utilized as a current collector, alongside graphene as an electrochemically active material. Yet achieving a cost-effective, large-scale graphene production, particularly on CF, remains challenging. Here, a rapid (<1 min) photothermal approach is developed for the large-scale production of graphene directly onto CF, utilizing polyaniline (PANI) as a polymer precursor. The in situ electropolymerization of PANI on CF facilitates its rapid synthesis on large areas, followed by conversion into graphene networks, enabling the binder-free fabrication of supercapacitor devices. These devices exhibit an areal capacitance of 180 mF cm-2 (at 2 mA cm-2 in 1 m H2SO4), an order of magnitude higher than other fabric-based devices. Moreover, the devised photothermal strategy allows for one-step preparation of supercapacitor devices on areas exceeding 100 cm-2, yielding an absolute areal capacitance of 4.5 F. The proportional increase in capacitance with device area facilitates scaling and indicates the commercial viability of this approach for low-cost, energy-efficient, and high-throughput production of lightweight, high-performance graphene-based multi-functional supercapacitor devices.
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Affiliation(s)
- Ayush Bhardwaj
- Polymer Science and Engineering Department, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
| | - Uzodinma Okoroanyanwu
- Polymer Science and Engineering Department, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
| | - James Nicolas Pagaduan
- Polymer Science and Engineering Department, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
| | - Wei Fan
- Department of Chemical Engineering, University of Massachusetts Amherst, 686 N Pleasant St, Amherst, MA, 01003, USA
| | - James J Watkins
- Polymer Science and Engineering Department, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
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29
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Prasannakumari ASN, Madhu GDP, Bhuvanendran RK, Bhuvaneshwari S. Development of a continuous electrochemical reactor incorporated with waste-derived activated carbon electrode for the effective removal of hexavalent chromium from industrial effluent. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:50297-50315. [PMID: 39093392 DOI: 10.1007/s11356-024-34512-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 07/23/2024] [Indexed: 08/04/2024]
Abstract
Being a recognized carcinogen, hexavalent chromium is hazardous to both human and environmental health. Thus, it is imperative to regulate and oversee their levels in a variety of industries, including textiles, dyes, pigments, and metal finishing. This study strives to reduce Cr(VI) in wastewater by using capacitive deionization in conjunction with an activated carbon-based electrode and a continuous electrochemical reactor (CER). Activated carbon derived from rubberwood sawdust demonstrated excellent properties, including a high surface area of 1157 m2 g-1. The electrical conductivity and mechanical stability of the electrode were enhanced by the incorporation of synthesized expanded graphite (EG) into the AC. Key parameters were optimized via systematic batch electroreduction experiments with an optimal response surface design. The efficacy of the fabricated CER was proved when it successfully reduced Cr(VI) in a 5 mg L-1 solution within 15 min under optimized conditions, in contrast to the considerably longer durations anticipated by conventional methods. Validation of these findings was done by treating industrial wastewater of 30 mg L-1 in the CER. The electroreduction of Cr(VI) followed the Langmuir isotherm with a maximum capacity of 13.491 mg g-1 and pseudo-second-order kinetics. These results indicate that the combined use of the modified AC electrode and CER holds potential as a sustainable and economical approach to effectively eliminate Cr(VI) from wastewater.
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Affiliation(s)
| | | | - Rahul Krishna Bhuvanendran
- Department of Chemical Engineering, National Institute of Technology Calicut, Kozhikode, Kerala, India, 673601
| | - Soundararajan Bhuvaneshwari
- Department of Chemical Engineering, National Institute of Technology Calicut, Kozhikode, Kerala, India, 673601.
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30
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Ding X, Xu J, Xu J, Zhao J, Liu R, Zheng L, Wang J, Zhang Y, Weng Z, Zhang C, Wu L, Cheng H, Zhang C. Standalone Stretchable Biophysical Sensing System Based on Laser Direct Write of Patterned Porous Graphene/Co 3O 4 Nanocomposites. ACS Sens 2024; 9:3730-3740. [PMID: 38916449 DOI: 10.1021/acssensors.4c00916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Skin-interfaced wearable sensors can continuously monitor various biophysical and biochemical signals for health monitoring and disease diagnostics. However, such devices are typically limited by unsatisfactory and unstable output performance of the power supplies under mechanical deformations and human movements. Furthermore, there is also a lack of a simple and cost-effective fabrication technique to fabricate and integrate varying materials in the device system. Herein, we report a fully integrated standalone stretchable biophysical sensing system by combining wearable biophysical sensors, triboelectric nanogenerator (TENG), microsupercapacitor arrays (MSCAs), power management circuits, and wireless transmission modules. All of the device components and interconnections based on the three-dimensional (3D) networked graphene/Co3O4 nanocomposites are fabricated via low-cost and scalable direct laser writing. The self-charging power units can efficiently harvest energy from body motion into a stable and adjustable voltage/current output to drive various biophysical sensors and wireless transmission modules for continuously capturing, processing, and wirelessly transmitting various signals in real-time. The novel material modification, device configuration, and system integration strategies provide a rapid and scalable route to the design and application of next-generation standalone stretchable sensing systems for health monitoring and human-machine interfaces.
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Affiliation(s)
- Xiaohong Ding
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University, Wuyishan 354300, P. R. China
- Fujian Key Laboratory of Functional Marine Sensing Materials, College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, P. R. China
- Department of Engineering Science and Mechanics, Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, United States
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Jin Xu
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University, Wuyishan 354300, P. R. China
| | - Jie Xu
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University, Wuyishan 354300, P. R. China
| | - Jinyun Zhao
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University, Wuyishan 354300, P. R. China
| | - Ruilai Liu
- Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University, Wuyishan 354300, P. R. China
| | - Longhui Zheng
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Jun Wang
- Fujian Key Laboratory of Functional Marine Sensing Materials, College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, P. R. China
| | - Yang Zhang
- Fujian Key Laboratory of Functional Marine Sensing Materials, College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, P. R. China
| | - Zixiang Weng
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Chen Zhang
- Fujian Key Laboratory of Functional Marine Sensing Materials, College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, P. R. China
| | - Lixin Wu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Huanyu Cheng
- Department of Engineering Science and Mechanics, Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Cheng Zhang
- Fujian Key Laboratory of Functional Marine Sensing Materials, College of Material and Chemical Engineering, Minjiang University, Fuzhou 350108, P. R. China
- Department of Engineering Science and Mechanics, Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, United States
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31
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Song Q, Zhang Y, Chen Q, Wu S, Yan X, He K, Gao G, Chen Q, Wang S. Site-Selective Synthesis of Bilayer Graphene on Cu Substrates Using Titanium as a Carbon Diffusion Barrier. ACS APPLIED MATERIALS & INTERFACES 2024; 16:38355-38364. [PMID: 39011562 DOI: 10.1021/acsami.4c04521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Chemical vapor deposition (CVD) is a widely used method for graphene synthesis, but it struggles to produce large-area uniform bilayer graphene (BLG). This study introduces a novel approach to meet the demands of large-scale integrated circuit applications, challenging the conventional reliance on uniform BLG over extensive areas. We developed a unique method involving the direct growth of bilayer graphene arrays (BLGA) on Cu foil substrates using patterned titanium (Ti) as a diffusion barrier. The use of the Ti layer can effectively control carbon atom diffusion through the Cu foil without altering the growth conditions or compromising the graphene quality, thereby showcasing its versatility. The approach allows for targeted BLG growth and achieved a yield of 100% for a 10 × 10 BLG units array. Then a 10 × 10 BLG memristor array was fabricated, and a yield of 96% was achieved. The performances of these devices show good uniformity, evidenced by the set voltages concentrated around 4 V, and a high resistance state (HRS) to low resistance state (LRS) ratio predominantly around 107, reflecting the spatial uniformity of the prepared BLGA. This study provides insight into the BLG growth mechanism and opens new possibilities for BLG-based electronics.
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Affiliation(s)
- Qiyang Song
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Youwei Zhang
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
- Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518057, China
| | - Qiao Chen
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Su Wu
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xin Yan
- Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an, Shaanxi 710119, China
| | - Kai He
- Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an, Shaanxi 710119, China
| | - Guilong Gao
- Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an, Shaanxi 710119, China
| | - Qiao Chen
- Gemmological Institute, China University of Geosciences, Wuhan 430074, China
| | - Shun Wang
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
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32
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Jangra V, Kataria S, Lemme MC. Reducing the Metal-Graphene Contact Resistance through Laser-Induced Defects. ACS APPLIED ELECTRONIC MATERIALS 2024; 6:4883-4890. [PMID: 39070088 PMCID: PMC11270821 DOI: 10.1021/acsaelm.4c00305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 05/24/2024] [Accepted: 05/26/2024] [Indexed: 07/30/2024]
Abstract
Graphene has been extensively studied for a variety of electronic and optoelectronic applications. The reported contact resistance between metal and graphene, or rather its specific contact resistance (R C), ranges from a few tens of Ω μm up to a few kΩ μm. Manufacturable solutions for defining ohmic contacts to graphene remain a subject of research. Here, we report a scalable method based on laser irradiation of graphene to reduce the R C in nickel-contacted devices. A laser with a wavelength of l = 532 nm is used to induce defects at the contact regions, which are monitored in situ using micro-Raman spectroscopy. Physical damage is observed using ex situ atomic force and scanning electron microscopy. The transfer length method (TLM) is used to extract R C from back-gated graphene devices with and without laser treatment under ambient and vacuum conditions. A significant reduction in R C is observed in devices where the contacts are laser irradiated, which scales with the laser power. The lowest R C of about 250 Ω μm is obtained for the devices irradiated with a laser power of 20 mW, compared to 900 Ω μm for the untreated devices. The reduction is attributed to an increase in defect density, which leads to the formation of crystallite edges and in-plane dangling bonds that enhance the injection of charge carriers from the metal into the graphene. Our work suggests laser irradiation as a scalable technology for R C reduction in graphene and potentially other two-dimensional materials.
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Affiliation(s)
- Vikas Jangra
- Chair
of Electronic Devices, RWTH Aachen University, Otto-Blumenthal-Str. 25, 52074 Aachen, Germany
| | - Satender Kataria
- Chair
of Electronic Devices, RWTH Aachen University, Otto-Blumenthal-Str. 25, 52074 Aachen, Germany
- AMO
GmbH, Advanced Microelectronics Center Aachen, Otto-Blumenthal-Str. 25, 52074 Aachen, Germany
| | - Max C. Lemme
- Chair
of Electronic Devices, RWTH Aachen University, Otto-Blumenthal-Str. 25, 52074 Aachen, Germany
- AMO
GmbH, Advanced Microelectronics Center Aachen, Otto-Blumenthal-Str. 25, 52074 Aachen, Germany
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33
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Zhang Q, Hao Y, Zeng T, Shu W, Xue P, Li Y, Huang C, Ouyang L, Zou X, Zhao Z, Wang J, Yu XF, Zhou W. Modular Fabrication of Microfluidic Graphene FET for Nucleic Acids Biosensing. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2401796. [PMID: 39044365 DOI: 10.1002/advs.202401796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/30/2024] [Indexed: 07/25/2024]
Abstract
Graphene field-effect transistors (GFETs) are widely used in biosensing due to their excellent properties in biomolecular signal amplification, exhibiting great potential for high-sensitivity and point-of-care testing in clinical diagnosis. However, difficulties in complicated fabrication steps are the main limitations for the further studies and applications of GFETs. In this study, a modular fabrication technique is introduced to construct microfluidic GFET biosensors within 3 independent steps. The low-melting metal electrodes and intricate flow channels are incorporated to maintain the structural integrity of graphene and facilitate subsequent sensing operations. The as-fabricated GFET biosensor demonstrates excellent long-term stability, and performs effectively in various ion environments. It also exhibits high sensitivity and selectivity for detecting single-stranded nucleic acids at a 10 fm concentration. Furthermore, when combined with the CRISPR/Cas12a system, it facilitates amplification-free and rapid detection of nucleic acids at a concentration of 1 fm. Thus, it is believed that this modular-fabricated microfluidic GFET may shed light on further development of FET-based biosensors in various applications.
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Affiliation(s)
- Qiongdi Zhang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Yuxuan Hao
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Tonghua Zeng
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Weiliang Shu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Pan Xue
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yang Li
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Chi Huang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Liwei Ouyang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Xuming Zou
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - Zhen Zhao
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Jiahong Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Xue-Feng Yu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- The Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Wenhua Zhou
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- The Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen, 518055, China
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34
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Martins VN, da Silva MM, Gonçalves DA, Presser V, Husmann S, Souza VHR. Freestanding Films of Reduced Graphene Oxide Fully Decorated with Prussian Blue Nanoparticles for Hydrogen Peroxide Sensing. ACS OMEGA 2024; 9:31569-31577. [PMID: 39072102 PMCID: PMC11270561 DOI: 10.1021/acsomega.4c01457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 05/20/2024] [Accepted: 06/26/2024] [Indexed: 07/30/2024]
Abstract
Developing thin, freestanding electrodes that work simultaneously as a current collector and electroactive material is pivotal to integrating portable and wearable chemical sensors. Herein, we have synthesized graphene/Prussian blue (PB) electrodes for hydrogen peroxide detection (H2O2) using a two-step method. First, an reduced graphene oxide/PAni/Fe2O3 freestanding film is prepared using a doctor blade technique, followed by the electrochemical deposition of PB nanoparticles over the films. The iron oxide nanoparticles work as the iron source for the heterogeneous electrochemical deposition of the nanoparticles in a ferricyanide solution. The size of the PB cubes electrodeposited over the graphene-based electrodes was controlled by the number of voltammetric cycles. For H2O2 sensing, the PB10 electrode achieved the lowest detection and quantification limits, 2.00 and 7.00 μM, respectively. The findings herein evidence the balance between the structure of the graphene/PB-based electrodes with the electrochemical performance for H2O2 detection and pave the path for developing new freestanding electrodes for chemical sensors.
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Affiliation(s)
- Vitor
H. N. Martins
- Faculty
of Exact Science and Technology, Universidade
Federal da Grande Dourados, Dourados, Mato Grosso do Sul 79804-970, Brazil
| | - Monize M. da Silva
- Faculty
of Exact Science and Technology, Universidade
Federal da Grande Dourados, Dourados, Mato Grosso do Sul 79804-970, Brazil
| | - Daniel A. Gonçalves
- Faculty
of Exact Science and Technology, Universidade
Federal da Grande Dourados, Dourados, Mato Grosso do Sul 79804-970, Brazil
| | - Volker Presser
- INM—Leibniz
Institute for New Materials, Campus D2-2, 66123 Saarbrücken, Germany
- Department
of Materials Science & Engineering, Saarland University, Campus D2 2, 66123 Saarbrücken, Germany
- Saarene—Saarland
Center for Energy Materials and Sustainability, Campus C4 2, 66123 Saarbrücken, Germany
| | - Samantha Husmann
- INM—Leibniz
Institute for New Materials, Campus D2-2, 66123 Saarbrücken, Germany
| | - Victor H. R. Souza
- Faculty
of Exact Science and Technology, Universidade
Federal da Grande Dourados, Dourados, Mato Grosso do Sul 79804-970, Brazil
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35
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Zhang W, van Dijk B, Wu L, Maheu C, Tudor V, Hofmann JP, Jiang L, Hetterscheid D, Schneider GF. Role of Vacancy Defects and Nitrogen Dopants for the Reduction of Oxygen on Graphene. ACS Catal 2024; 14:11065-11075. [PMID: 39050903 PMCID: PMC11264207 DOI: 10.1021/acscatal.4c01713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 06/24/2024] [Accepted: 06/24/2024] [Indexed: 07/27/2024]
Abstract
Disentangling the roles of nitrogen dopants and vacancy defects (VG) in metal-free carbon catalysts for the oxygen reduction reaction (ORR) ideally requires studying both the dopants and defects separately. Here, we systematically introduced nitrogen dopants and VGs via plasma treatment into the basal plane of monolayer graphene as a model carbon catalyst to investigate their specific roles in ORR catalysis. An increased defect density including dopants is positively associated with boosted ORR activity. Nitrogen dopants are responsible for an improved current via a 2e- pathway generating hydroperoxide, while VGs result in enhanced kinetics and water production. We therefore infer that VGs in graphene are responsible for the improved ORR kinetics, while nitrogen dopants majorly influence the selectivity of ORR reaction products. The nitrogen dopants without VGs lead to a higher overpotential compared with the pristine graphene. Instead of the attribution of the ORR active site to only nitrogen species in carbon materials, the improved ORR activity in nitrogen-doped carbon materials should be attributed to the active sites constituted of VGs, oxygen dopants, and nitrogen dopants. Through this work, we provide important insights into the intertwined roles of nitrogen and VGs as well as oxygen dopants in nitrogen-doped metal-free catalysts for a more efficient ORR.
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Affiliation(s)
- Weizhe Zhang
- Faculty
of Science, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Bas van Dijk
- Faculty
of Science, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Longfei Wu
- Department
of Chemical Engineering and Chemistry, Inorganic Materials & Catalysis, Eindhoven University of Technology, Groene Loper 5, 5612AE Eindhoven, The Netherlands
| | - Clément Maheu
- Surface
Science Laboratory, Department of Materials- and Geosciences, Technical University of Darmstadt, Peter-Grünberg-Straße
4, 64287 Darmstadt, Germany
| | - Viorica Tudor
- Faculty
of Science, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Jan Philipp Hofmann
- Department
of Chemical Engineering and Chemistry, Inorganic Materials & Catalysis, Eindhoven University of Technology, Groene Loper 5, 5612AE Eindhoven, The Netherlands
- Surface
Science Laboratory, Department of Materials- and Geosciences, Technical University of Darmstadt, Peter-Grünberg-Straße
4, 64287 Darmstadt, Germany
| | - Lin Jiang
- Faculty
of Science, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333CC Leiden, The Netherlands
- School
of Microelectronics, Shanghai University, Chengzhong Road 20, 201800 Shanghai, China
| | - Dennis Hetterscheid
- Faculty
of Science, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Grégory F. Schneider
- Faculty
of Science, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333CC Leiden, The Netherlands
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36
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Nalepa MA, Panáček D, Dědek I, Jakubec P, Kupka V, Hrubý V, Petr M, Otyepka M. Graphene derivative-based ink advances inkjet printing technology for fabrication of electrochemical sensors and biosensors. Biosens Bioelectron 2024; 256:116277. [PMID: 38613934 DOI: 10.1016/j.bios.2024.116277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/16/2024] [Accepted: 04/05/2024] [Indexed: 04/15/2024]
Abstract
The field of biosensing would significantly benefit from a disruptive technology enabling flexible manufacturing of uniform electrodes. Inkjet printing holds promise for this, although realizing full electrode manufacturing with this technology remains challenging. We introduce a nitrogen-doped carboxylated graphene ink (NGA-ink) compatible with commercially available printing technologies. The water-based and additive-free NGA-ink was utilized to produce fully inkjet-printed electrodes (IPEs), which demonstrated successful electrochemical detection of the important neurotransmitter dopamine. The cost-effectiveness of NGA-ink combined with a total cost per electrode of $0.10 renders it a practical solution for customized electrode manufacturing. Furthermore, the high carboxyl group content of NGA-ink (13 wt%) presents opportunities for biomolecule immobilization, paving the way for the development of advanced state-of-the-art biosensors. This study highlights the potential of NGA inkjet-printed electrodes in revolutionizing sensor technology, offering an affordable, scalable alternative to conventional electrochemical systems.
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Affiliation(s)
- Martin-Alex Nalepa
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - David Panáček
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic; Nanotechnology Centre, Centre of Energy and Environmental Technologies, VSB - Technical University of Ostrava, 17. listopadu 2172/15, 708 00, Ostrava-Poruba, Czech Republic
| | - Ivan Dědek
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic; Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 1192/12, Olomouc, 771 46, Czech Republic
| | - Petr Jakubec
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Vojtěch Kupka
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Vítězslav Hrubý
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic; Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 1192/12, Olomouc, 771 46, Czech Republic
| | - Martin Petr
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc, 783 71, Czech Republic; IT4Innovations, VSB - Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba, 708 00, Czech Republic.
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37
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Schiattarella C, Di Gaspare A, Viti L, Justo Guerrero MA, Li LH, Salih M, Davies AG, Linfield EH, Zhang J, Ramezani H, Ferrari AC, Vitiello MS. Terahertz near-field microscopy of metallic circular split ring resonators with graphene in the gap. Sci Rep 2024; 14:16227. [PMID: 39004617 PMCID: PMC11247082 DOI: 10.1038/s41598-024-62787-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 05/21/2024] [Indexed: 07/16/2024] Open
Abstract
Optical resonators are fundamental building blocks of photonic systems, enabling meta-surfaces, sensors, and transmission filters to be developed for a range of applications. Sub-wavelength size (< λ/10) resonators, including planar split-ring resonators, are at the forefront of research owing to their potential for light manipulation, sensing applications and for exploring fundamental light-matter coupling phenomena. Near-field microscopy has emerged as a valuable tool for mode imaging in sub-wavelength size terahertz (THz) frequency resonators, essential for emerging THz devices (e.g. negative index materials, magnetic mirrors, filters) and enhanced light-matter interaction phenomena. Here, we probe coherently the localized field supported by circular split ring resonators with single layer graphene (SLG) embedded in the resonator gap, by means of scattering-type scanning near-field optical microscopy (s-SNOM), using either a single-mode or a frequency comb THz quantum cascade laser (QCL), in a detectorless configuration, via self-mixing interferometry. We demonstrate deep sub-wavelength mapping of the field distribution associated with in-plane resonator modes resolving both amplitude and phase of the supported modes, and unveiling resonant electric field enhancement in SLG, key for high harmonic generation.
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Affiliation(s)
| | | | - Leonardo Viti
- NEST, CNR-NANO and Scuola Normale Superiore, 56127, Pisa, Italy
| | | | - Lianhe H Li
- School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Mohammed Salih
- School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - A Giles Davies
- School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Edmund H Linfield
- School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Jincan Zhang
- Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, UK
| | - Hamideh Ramezani
- Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, UK
| | - Andrea C Ferrari
- Cambridge Graphene Centre, University of Cambridge, Cambridge, CB3 0FA, UK
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38
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Yao J, Kim C, Nian Q, Kang W. Copper-Graphene Composite (CGC) Conductors: Synthesis, Microstructure, and Electrical Performance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403241. [PMID: 38984726 DOI: 10.1002/smll.202403241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 06/06/2024] [Indexed: 07/11/2024]
Abstract
Improving the electrical performance of copper, the most widely used electrical conductor in the world is of vital importance to the progress of key technologies, including electric vehicles, portable devices, renewable energy, and power grids. Copper-graphene composite (CGC) stands out as the most promising candidate for high-performance electrical conductor applications. This can be attributed to the superior properties of graphene fillers embedded in CGC, including excellent electrical and thermal conductivity, corrosion resistance, and high mechanical strength. This review highlights the recent progress of CGC conductors, including their fabrication processes, electrical performances, mechanisms of copper-graphene interplay, and potential applications.
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Affiliation(s)
- Jiali Yao
- School for the Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ, 85287, USA
| | - Chunghwan Kim
- School for the Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ, 85287, USA
| | - Qiong Nian
- School for the Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ, 85287, USA
| | - Wonmo Kang
- School for the Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ, 85287, USA
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39
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Huang QM, Yang H, Wang S, Liu X, Tan C, Zong Q, Gao C, Li S, French P, Zhang G, Ye H. Chitosan Oligosaccharide Laser Lithograph: A Facile Route to Porous Graphene Electrodes for Flexible On-Chip Microsupercapacitors. ACS APPLIED MATERIALS & INTERFACES 2024; 16:35651-35665. [PMID: 38922439 DOI: 10.1021/acsami.4c02139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
In this study, a convenient chitosan oligosaccharide laser lithograph (COSLL) technology was developed to fabricate laser-induced graphene (LIG) electrodes and flexible on-chip microsupercapacitors (MSCs). With a simple one-step CO2 laser, the pyrolysis of a chitosan oligosaccharide (COS) and in situ welding of the generated LIGs to engineering plastic substrates are achieved simultaneously. The resulting LIG products display a hierarchical porous architecture, excellent electrical conductivity (6.3 Ω sq-1), and superhydrophilic properties, making them ideal electrode materials for MSCs. The pyrolysis-welding coupled mechanism is deeply discussed through cross-sectional analyses and finite element simulations. The MSCs prepared by COSLL exhibit considerable areal capacitance of over 4 mF cm-2, which is comparable to that of the polyimide-LIG-based counterpart. COSLL is also compatible with complementary metal-oxide-semiconductor (CMOS) and micro-electro-mechanical system (MEMS) processes, enabling the fabrication of LIG/Au MSCs with comparable areal capacitance and lower internal resistance. Furthermore, the as-prepared MSCs demonstrate excellent mechanical robustness, long-cycle capability, and ease of series-parallel integration, benefiting their practical application in various scenarios. With the use of eco-friendly biomass carbon source and convenient process flowchart, the COSLL emerges as an attractive method for the fabrication of flexible LIG on-chip MSCs and various other advanced LIG devices.
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Affiliation(s)
- Qian-Ming Huang
- Harbin Institute of Technology, Harbin 150001, China
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Huiru Yang
- Harbin Institute of Technology, Harbin 150001, China
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shaogang Wang
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
- Faculty of EEMCS, Delft University of Technology, 2628 CD Delft, The Netherlands
| | - Xu Liu
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
- Faculty of EEMCS, Delft University of Technology, 2628 CD Delft, The Netherlands
| | - Chunjian Tan
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
- Faculty of EEMCS, Delft University of Technology, 2628 CD Delft, The Netherlands
| | - Qihang Zong
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chenshan Gao
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shizhen Li
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Paddy French
- Faculty of EEMCS, Delft University of Technology, 2628 CD Delft, The Netherlands
| | - Guoqi Zhang
- Faculty of EEMCS, Delft University of Technology, 2628 CD Delft, The Netherlands
| | - Huaiyu Ye
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
- Faculty of EEMCS, Delft University of Technology, 2628 CD Delft, The Netherlands
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40
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Fois L, Stagi L, Carboni D, Alboushi M, Khaleel A, Anedda R, Innocenzi P. The Formation of Carbon Dots from D-Glucose Studied by Infrared Spectroscopy. Chemistry 2024; 30:e202400158. [PMID: 38619533 DOI: 10.1002/chem.202400158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 04/08/2024] [Accepted: 04/15/2024] [Indexed: 04/16/2024]
Abstract
Carbon dots (C-dots) obtained from D-glucose have attracted great interest because of their properties and as a model for understanding the synthesis process and the origin of photoluminescence in carbon-based nanostructures. Synthesising C-dots under hydrothermal conditions has become one of the most common methods for their preparation. Understanding the details of this process is quite difficult. To tackle this challenge, we have adopted a multi-technique approach in our present work. We have correlated different spectroscopic analyses, such as infrared, Raman, fluorescence, NMR, and UV-Vis, to connect the emissions with specific chemical groups. In particular, in situ infrared analysis as a function of temperature has allowed following the formation of C=C, C=O, and COOH species and the rise of specific emissions. Only weak emissions due to n-π* transitions are detected upon post-synthesis thermal annealing.
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Affiliation(s)
- Livia Fois
- Laboratory of Materials Science and Nanotechnology (LMNT), Department of Biomedical Sciences, CR-INSTM, University of Sassari, 07100, Sassari, Italy
| | - Luigi Stagi
- Laboratory of Materials Science and Nanotechnology (LMNT), Department of Biomedical Sciences, CR-INSTM, University of Sassari, 07100, Sassari, Italy
| | - Davide Carboni
- Laboratory of Materials Science and Nanotechnology (LMNT), Department of Biomedical Sciences, CR-INSTM, University of Sassari, 07100, Sassari, Italy
| | - Meera Alboushi
- College of Science, Department of Chemistry, United Arab Emirates University., Al Ain., United Arab Emirates
| | - Abbas Khaleel
- College of Science, Department of Chemistry, United Arab Emirates University., Al Ain., United Arab Emirates
| | - Roberto Anedda
- Porto Conte Ricerche, Strada Provinciale 55, Porto Conte Capo Caccia, km. 8,400., 07041, Alghero (SS, Italy
| | - Plinio Innocenzi
- Laboratory of Materials Science and Nanotechnology (LMNT), Department of Biomedical Sciences, CR-INSTM, University of Sassari, 07100, Sassari, Italy
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41
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Yin XT, You EM, Zhou RY, Zhu LH, Wang WW, Li KX, Wu DY, Gu Y, Li JF, Mao BW, Yan JW. Unraveling the energy storage mechanism in graphene-based nonaqueous electrochemical capacitors by gap-enhanced Raman spectroscopy. Nat Commun 2024; 15:5624. [PMID: 38965231 PMCID: PMC11224393 DOI: 10.1038/s41467-024-49973-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 06/26/2024] [Indexed: 07/06/2024] Open
Abstract
Graphene has been extensively utilized as an electrode material for nonaqueous electrochemical capacitors. However, a comprehensive understanding of the charging mechanism and ion arrangement at the graphene/electrolyte interface remain elusive. Herein, a gap-enhanced Raman spectroscopic strategy is designed to characterize the dynamic interfacial process of graphene with an adjustable number of layers, which is based on synergistic enhancement of localized surface plasmons from shell-isolated nanoparticles and a metal substrate. By employing such a strategy combined with complementary characterization techniques, we study the potential-dependent configuration of adsorbed ions and capacitance curves for graphene based on the number of layers. As the number of layers increases, the properties of graphene transform from a metalloid nature to graphite-like behavior. The charging mechanism shifts from co-ion desorption in single-layer graphene to ion exchange domination in few-layer graphene. The increase in area specific capacitance from 64 to 145 µF cm-2 is attributed to the influence on ion packing, thereby impacting the electrochemical performance. Furthermore, the potential-dependent coordination structure of lithium bis(fluorosulfonyl) imide in tetraglyme ([Li(G4)][FSI]) at graphene/electrolyte interface is revealed. This work adds to the understanding of graphene interfaces with distinct properties, offering insights for optimization of electrochemical capacitors.
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Affiliation(s)
- Xiao-Ting Yin
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - En-Ming You
- School of Ocean Information Engineering, Fujian Provincial Key Laboratory of Oceanic Information Perception and Intelligent Processing, Jimei University, Xiamen, China
| | - Ru-Yu Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Li-Hong Zhu
- Department of Electronic Science, Xiamen University, Xiamen, China
| | - Wei-Wei Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Kai-Xuan Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - De-Yin Wu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Yu Gu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China.
| | - Jian-Feng Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China.
| | - Bing-Wei Mao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Jia-Wei Yan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China.
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Song Z, Shen Y, Xu N, Hong T, Zhu H, Wang Z, Tang S, Zhang Y, Chen H, Deng S. Dependence of Ultrafast Electron Emission Characteristics of Graphene Cold Cathode on Femtosecond Photoexcitation Polarization Angle. ACS APPLIED MATERIALS & INTERFACES 2024; 16:34001-34009. [PMID: 38961569 DOI: 10.1021/acsami.4c08955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
Ultrafast electron pulses, generated through femtosecond photoexcitation in nanocathode materials, introduce high-frequency characteristics and ultrahigh temporal-spatial resolution to vacuum micro-nano electronic devices. To advance the development of ultrafast electron sources sensitive to polarized light, we propose an ultrafast pulsed electron source based on a vertical few-layer graphene cold cathode. This source exhibits selective electron emission properties for varying polarization angles, with high switching ratios of 277 (at 0°) and 235 (at 90°). The electron emission of the graphene evolves from cosine to sine as the polarization angle increases from 0° to 90°. The variation of electron emission current with polarization angle is intrinsically related to light absorption, local field enhancement, and photothermal conversion efficiency. A physical mechanism model and semiempirical expression were presented to reveal the MPP and PTE mechanisms at different polarization angles. This tunable conversion between mechanisms indicates potential applications in tunable ultrafast optoelectronic devices.
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Affiliation(s)
- Zheyu Song
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Provincial Key Laboratory of Display Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Yan Shen
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Provincial Key Laboratory of Display Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Ningsheng Xu
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Provincial Key Laboratory of Display Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Tianzeng Hong
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Provincial Key Laboratory of Display Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Hai Zhu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Zixin Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Provincial Key Laboratory of Display Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Shuai Tang
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Provincial Key Laboratory of Display Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Yu Zhang
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Provincial Key Laboratory of Display Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Huanjun Chen
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Provincial Key Laboratory of Display Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Shaozhi Deng
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Provincial Key Laboratory of Display Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, P. R. China
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43
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Jeong SY, Kim JS, Kwon YW, Ito Y, Park CH, Park JH, Shin BS, Sugita N. Enhancing Laser-Induced Graphene via Integration of Gold Nanoparticles and Titanium Dioxide for Sensing and Robotics Applications. ACS APPLIED MATERIALS & INTERFACES 2024; 16:33943-33953. [PMID: 38961572 DOI: 10.1021/acsami.4c03844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
Laser-induced graphene (LIG) is a promising material for various applications due to its unique properties and facile fabrication. However, the electrochemical performance of LIG is significantly lower than that of pure graphene, limiting its practical use. Theoretically, integrating other conductive materials with LIG can enhance its performance. In this study, we investigated the effects of incorporating gold nanoparticles (AuNPs) and titanium dioxide (TiO2) into LIG on its electrochemical properties using ReaxFF molecular dynamics (MD) simulations and experimental validation. We found that both AuNPs and TiO2 improved the work function and surface potential of LIG, resulting in a remarkable increase in output voltage by up to 970.5% and output power density by 630% compared to that of pristine LIG. We demonstrated the practical utility of these performance-enhanced LIG by developing motion monitoring devices, self-powered sensing systems, and robotic hand platforms. Our work provides new insights into the design and optimization of LIG-based devices for wearable electronics and smart robotics, contributing to the advancement of sustainable technologies.
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Affiliation(s)
- Sung-Yeob Jeong
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Jin-Su Kim
- Department of Cogno-Mechatronices Enginerring, Pusan National University, Pusan 46241, Republic of Korea
| | - Yong-Wan Kwon
- Department of Mechanical Engineering, Pusan National University, Pusan 46241, Republic of Korea
| | - Yusuke Ito
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Chang-Hyun Park
- Department of Cogno-Mechatronices Enginerring, Pusan National University, Pusan 46241, Republic of Korea
| | - Jun-Han Park
- Ground Technology Research Institute, Agency for Defense Development, Daejeon 34186, Republic of Korea
| | - Bo-Sung Shin
- Department of Optics and Mechatronics Engineering, Pusan National University, Pusan 46241, Republic of Korea
| | - Naohiko Sugita
- Department of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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44
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Colombo R, Moroni G, Negri C, Delen G, Monai M, Donazzi A, Weckhuysen BM, Maestri M. Surface Carbon Formation and its Impact on Methane Dry Reforming Kinetics on Rhodium-Based Catalysts by Operando Raman Spectroscopy. Angew Chem Int Ed Engl 2024:e202408668. [PMID: 38958601 DOI: 10.1002/anie.202408668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/01/2024] [Accepted: 07/01/2024] [Indexed: 07/04/2024]
Abstract
A mechanism for carbon deposition and its impact on the reaction kinetics of Methane Dry Reforming (MDR) using Rhodium-based catalysts is presented. By integrating Raman spectroscopy with kinetic analysis in an operando-annular chemical reactor under strict chemical conditions, we discovered that carbon deposition on a Rh/α-Al2O3 catalyst follows a nucleation-growth mechanism. The dynamics of carbon aggregates at the surface is found to be ruled by the CO2/CH4 ratio and the inlet CH4 concentration. The findings elucidate the spatiotemporal development of carbon aggregates on the catalyst surface and their effects on catalytic performance. Furthermore, the proposed mechanism for carbon formation shows that the influence of CO2 on MDR kinetics is an indirect result of carbon accumulation over time frames exceeding the turnover frequency, thus reconciling conflicting reports in the literature regarding CO2's kinetic role in MDR.
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Affiliation(s)
- Riccardo Colombo
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Gianluca Moroni
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Chiara Negri
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Guusje Delen
- Inorganic Chemistry and Catalysis Group, Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Matteo Monai
- Inorganic Chemistry and Catalysis Group, Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Alessandro Donazzi
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Bert M Weckhuysen
- Inorganic Chemistry and Catalysis Group, Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Matteo Maestri
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
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45
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Cho YS, Lee JW, Jung Y, Park JY, Park JS, Kim SM, Yang SJ, Park CR. Super-Toughness Carbon Nanotube Yarns by Bio-Inspired Nano-Coiling Engineering. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2400460. [PMID: 38654622 PMCID: PMC11220680 DOI: 10.1002/advs.202400460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 04/03/2024] [Indexed: 04/26/2024]
Abstract
Lightweight structural materials are commonly used as effective fillers for advanced composites with high toughness. This study focused on enhancing the toughness of direct-spun carbon nanotube yarns (CNTYs) by controlling the micro-textural structure using a water-gap-based direct spinning. Drawing inspiration from the structural features of natural spider silk fibroin, characterized by an α-helix in the amorphous region and β-sheet in the crystalline region, multiscale bundles within CNTYs are reorganized into a unique nano-coil-like structure. This nano-coiled structure facilitated the efficient dissipation of external mechanical loads through densification with the rearrangement of multiscale bundles, improving specific strength and strain. The resulting CNTYs exhibited exceptional mechanical properties with toughness reaching 250 J g-1, making them promising alternatives to commercially available fibers in lightweight, high-toughness applications. These findings highlight the significance of nano-coiling engineering for emulating bio-inspired micro-textural structures, achieving remarkable enhancement in the toughness of CNTYs.
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Affiliation(s)
- Young Shik Cho
- Institute of Advanced Composite MaterialsKorea Institute of Science and Technology (KIST)Wanju55324Republic of Korea
| | - Jae Won Lee
- Department of Materials Science & Engineering and Research Institute of Advanced MaterialsSeoul National UniversitySeoul08826Republic of Korea
| | - Yeonsu Jung
- Composite Research DivisionKorea Institute of Materials Science (KIMS)Changwon51508Republic of Korea
| | - Ji Yong Park
- Department of Chemistry & Chemical EngineeringEducation and Research Center for Smart Energy and MaterialsInha UniversityIncheon22212Republic of Korea
| | - Jae Seo Park
- Department of Chemistry & Chemical EngineeringEducation and Research Center for Smart Energy and MaterialsInha UniversityIncheon22212Republic of Korea
| | - Sang Min Kim
- Department of Chemistry & Chemical EngineeringEducation and Research Center for Smart Energy and MaterialsInha UniversityIncheon22212Republic of Korea
| | - Seung Jae Yang
- Department of Chemistry & Chemical EngineeringEducation and Research Center for Smart Energy and MaterialsInha UniversityIncheon22212Republic of Korea
| | - Chong Rae Park
- Department of Materials Science & Engineering and Research Institute of Advanced MaterialsSeoul National UniversitySeoul08826Republic of Korea
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46
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Meng L, Akhoundian M, Al Azawi A, Shoja Y, Chi PY, Meinander K, Suihkonen S, Franssila S. Ultrasensitive Monolithic Dopamine Microsensors Employing Vertically Aligned Carbon Nanofibers. Adv Healthc Mater 2024; 13:e2303872. [PMID: 38837670 DOI: 10.1002/adhm.202303872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/19/2024] [Indexed: 06/07/2024]
Abstract
Brain-on-Chip devices, which facilitate on-chip cultures of neurons to simulate brain functions, are receiving tremendous attention from both fundamental and clinical research. Consequently, microsensors are being developed to accomplish real-time monitoring of neurotransmitters, which are the benchmarks for neuron network operation. Among these, electrochemical sensors have emerged as promising candidates for detecting a critical neurotransmitter, dopamine. However, current state-of-the-art electrochemical dopamine sensors are suffering from issues like limited sensitivity and cumbersome fabrication. Here, a novel route in monolithically microfabricating vertically aligned carbon nanofiber electrochemical dopamine microsensors is reported with an anti-blistering slow cooling process. Thanks to the microfabrication process, microsensors is created with complete insulation and large surface areas. The champion device shows extremely high sensitivity of 4.52× 104 µAµM-1·cm-2, which is two-orders-of-magnitude higher than current devices, and a highly competitive limit of detection of 0.243 nM. These remarkable figures-of-merit will open new windows for applications such as electrochemical recording from a single neuron.
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Affiliation(s)
- Lingju Meng
- Department of Chemistry and Materials Science, Aalto University, Espoo, 02150, Finland
- Micronova Nanofabrication Centre, Aalto University, Espoo, 02150, Finland
| | - Maedeh Akhoundian
- Department of Electrical Engineering and Automation, Aalto University, Espoo, 02150, Finland
| | - Anas Al Azawi
- Department of Chemistry and Materials Science, Aalto University, Espoo, 02150, Finland
- Micronova Nanofabrication Centre, Aalto University, Espoo, 02150, Finland
| | - Yalda Shoja
- Department of Chemistry and Materials Science, Aalto University, Espoo, 02150, Finland
- Micronova Nanofabrication Centre, Aalto University, Espoo, 02150, Finland
| | - Pei-Yin Chi
- Department of Chemistry and Materials Science, Aalto University, Espoo, 02150, Finland
- Micronova Nanofabrication Centre, Aalto University, Espoo, 02150, Finland
| | - Kristoffer Meinander
- Department of Bioproducts and Biosystems, Aalto University, Espoo, 02150, Finland
| | - Sami Suihkonen
- Department of Electronics and Nanoengineering, Aalto University, Espoo, 02150, Finland
| | - Sami Franssila
- Department of Chemistry and Materials Science, Aalto University, Espoo, 02150, Finland
- Micronova Nanofabrication Centre, Aalto University, Espoo, 02150, Finland
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47
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Wang S, Tan L, Yang Z, Zhao H, Guo L. A Strong, Tough, and Stable Composite with Nacre-Inspired Sandwich Structure. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2401883. [PMID: 38662873 DOI: 10.1002/adma.202401883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 04/23/2024] [Indexed: 05/14/2024]
Abstract
Improving the fracture resistance of nacre-inspired composites is crucial in addressing the strength-toughness trade-off. However, most previously proposed strategies for enhancing fracture resistance in these composites have been limited to interfacial modification by polymer, which restricts mechanical enhancement. Here, a composite material consisting of graphene oxide (GO) lamellae and nanocrystalline reinforced amorphous alumina nanowires (NAANs) has been developed. The structure of the composite is inspired by nacre and is composed of stacked GO nanosheets with NAANs in between, forming a sandwich-like structure. This design enhances the fracture resistance of the composite through the pull-out of GO nanosheets at the nanoscale and GO/NAANs sandwich-like coupling at the micro-scale, while also providing stiff ceramic support. This composite simultaneously possesses high strength (887.8 MPa), toughness (31.6 MJ m-3), superior cyclic stability (1600 cycles), and long-term (2 years) immersion stability, which outperform previously reported GO-based lamellar composites. The hierarchical fracture design provides a new path to design next-generation strong, tough, and stable materials for advanced engineering applications.
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Affiliation(s)
- Shaoxiong Wang
- School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Lulu Tan
- School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Zhao Yang
- School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Hewei Zhao
- School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
| | - Lin Guo
- School of Chemistry, Beihang University (BUAA), Beijing, 100191, P. R. China
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48
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Wyss RM, Kewes G, Marabotti P, Koepfli SM, Schlichting KP, Parzefall M, Bonvin E, Sarott MF, Trassin M, Oezkent M, Lu CH, Gradwohl KP, Perrault T, Habibova L, Marcelli G, Giraldo M, Vermant J, Novotny L, Frimmer M, Weber MC, Heeg S. Bulk-suppressed and surface-sensitive Raman scattering by transferable plasmonic membranes with irregular slot-shaped nanopores. Nat Commun 2024; 15:5236. [PMID: 38897990 PMCID: PMC11187206 DOI: 10.1038/s41467-024-49130-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
Raman spectroscopy enables the non-destructive characterization of chemical composition, crystallinity, defects, or strain in countless materials. However, the Raman response of surfaces or thin films is often weak and obscured by dominant bulk signals. Here we overcome this limitation by placing a transferable porous gold membrane, (PAuM) on the surface of interest. Slot-shaped nanopores in the membrane act as plasmonic antennas and enhance the Raman response of the surface or thin film underneath. Simultaneously, the PAuM suppresses the penetration of the excitation laser into the bulk, efficiently blocking its Raman signal. Using graphene as a model surface, we show that this method increases the surface-to-bulk Raman signal ratio by three orders of magnitude. We find that 90% of the Raman enhancement occurs within the top 2.5 nm of the material, demonstrating truly surface-sensitive Raman scattering. To validate our approach, we quantify the strain in a 12.5 nm thin Silicon film and analyze the surface of a LaNiO3 thin film. We observe a Raman mode splitting for the LaNiO3 surface-layer, which is spectroscopic evidence that the surface structure differs from the bulk. These results validate that PAuM gives direct access to Raman signatures of thin films and surfaces.
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Affiliation(s)
- Roman M Wyss
- Institut für Physik und IRIS Adlershof, Humboldt-Universität zu Berlin, 12489, Berlin, Germany
- Soft Materials, Department of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | - Günter Kewes
- Institut für Physik und IRIS Adlershof, Humboldt-Universität zu Berlin, 12489, Berlin, Germany
| | - Pietro Marabotti
- Institut für Physik und IRIS Adlershof, Humboldt-Universität zu Berlin, 12489, Berlin, Germany
| | - Stefan M Koepfli
- Institute of Electromagnetic Fields (IEF), ETH Zürich, 8092 Zürich, Switzerland
| | - Karl-Philipp Schlichting
- Laboratory of Thermodynamics in Emerging Technologies Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zürich, Switzerland
| | | | - Eric Bonvin
- Photonics Lab, ETH Zürich, 8093 Zürich, Switzerland
| | - Martin F Sarott
- Department of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | - Morgan Trassin
- Department of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | | | - Chen-Hsun Lu
- Leibniz-Institut für Kristallzüchtung, 12489, Berlin, Germany
| | | | - Thomas Perrault
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS, Le Mans Université, 72085, Le Mans, France
| | - Lala Habibova
- Institut für Physik und IRIS Adlershof, Humboldt-Universität zu Berlin, 12489, Berlin, Germany
| | - Giorgia Marcelli
- Institut für Physik und IRIS Adlershof, Humboldt-Universität zu Berlin, 12489, Berlin, Germany
| | - Marcela Giraldo
- Department of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | - Jan Vermant
- Soft Materials, Department of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | | | | | - Mads C Weber
- Institut des Molécules et Matériaux du Mans, UMR 6283 CNRS, Le Mans Université, 72085, Le Mans, France
| | - Sebastian Heeg
- Institut für Physik und IRIS Adlershof, Humboldt-Universität zu Berlin, 12489, Berlin, Germany.
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49
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Hu YZ, Li J, Luo LL, Hu SL, Shen HH, Long XG. Regulating interface interaction in alumina/graphene composites with nano alumina coating transition layers. RSC Adv 2024; 14:20020-20031. [PMID: 38911829 PMCID: PMC11191459 DOI: 10.1039/d4ra00356j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 06/01/2024] [Indexed: 06/25/2024] Open
Abstract
The structure and properties of graphene/alumina composites are affected by the interface interaction. To demonstrate the influence of interface interaction on the structure of composite materials, a composite without graphene/matrix alumina interface was designed and prepared. We introduced a nano transition layer into the composite by pre-fabricating nano alumina coating on the surface of graphene, thus regulating the influence of interface interaction on the structure of the composite. According to the analysis of laser micro Raman spectroscopy, the structure of graphene was not seriously damaged during the modification process, and graphene was subjected to tensile or compressive stress along the 2D plane. The fracture behavior of the modified graphene/alumina composites is similar to that of pure alumina, but significantly different from that of pure graphene/alumina composites. The elastic modulus and hardness of composite material G/A/A are higher, while its microstructure has better density and uniformity. In situ HRSEM observation showed that there was a transition layer of alumina in the modified graphene/alumina composite. The transition layer blocks or buffers the interfacial stress interaction, therefore, the composite material exhibits a fracture behavior similar to that of pure alumina at this time. This work demonstrates that interface interactions have a significant impact on the structure and fracture behavior of graphene/alumina composites.
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Affiliation(s)
- Yan-Ze Hu
- Institute of Nuclear Physics and Chemistry Science and Technology Innovation Park, No. 21 Horticultural Road Mianyang China
| | - Jing Li
- Institute of Nuclear Physics and Chemistry Science and Technology Innovation Park, No. 21 Horticultural Road Mianyang China
| | - Li-Li Luo
- Institute of Nuclear Physics and Chemistry Science and Technology Innovation Park, No. 21 Horticultural Road Mianyang China
| | - Shuang-Lin Hu
- Institute of Nuclear Physics and Chemistry Science and Technology Innovation Park, No. 21 Horticultural Road Mianyang China
| | - Hua-Hai Shen
- Institute of Nuclear Physics and Chemistry Science and Technology Innovation Park, No. 21 Horticultural Road Mianyang China
| | - Xing-Gui Long
- Institute of Nuclear Physics and Chemistry Science and Technology Innovation Park, No. 21 Horticultural Road Mianyang China
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50
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Lin G, Zhu Y, Ding H, Chen G, Yang T, Jiang L, Wang R, Shentu X, Li C. Low-cost and efficient all group-IV visible/shortwave infrared dual-band photodetector. OPTICS LETTERS 2024; 49:3488-3491. [PMID: 38875652 DOI: 10.1364/ol.529590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Accepted: 05/28/2024] [Indexed: 06/16/2024]
Abstract
Low-cost broadband photodetectors (PDs) based on group-IV materials are highly demanded. Herein, a vertical all group-IV graphene-i-n (Gr-i-n) structure based on sputtering-grown undoped Ge0.92Sn0.08/Ge multiple quantum wells (MQWs) on n-Ge substrate was proposed to realize efficient visible/shortwave infrared (VIS/SWIR) dual-band photoresponse. Harnessing Gr-germanium tin (GeSn)/Ge MQWs van der Waals heterojunctions, an extended surface depletion region was established, facilitating separation and transportation of photogenerated carriers at VIS wavelengths. Consequently, remarkable VIS/SWIR dual-band response ranging from 400 to 2000 nm with a rapid response time of 23 μs was achieved. Compared to the PD without Gr, the external quantum efficiency at 420, 660, and 1520 nm was effectively enhanced by 10.2-, 5.2-, and 1.2-fold, reaching 40, 42, and 50%, respectively. This research paves the way for the advancement of all group-IV VIS/SWIR broadband PDs and presents what we believe to be a novel approach to the design of low-cost broadband PDs.
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