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Utagawa Y, Ino K, Shinoda Y, Yamazaki M, Abe H, Shiku H. Enzyme-Free In-Situ Electrochemical Measurement Using a Porous Membrane Electrode for Glucose Transport into Cell Spheroids. ACS Sens 2024; 9:4248-4255. [PMID: 39079053 PMCID: PMC11348417 DOI: 10.1021/acssensors.4c01230] [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: 05/22/2024] [Revised: 07/10/2024] [Accepted: 07/23/2024] [Indexed: 08/24/2024]
Abstract
Microphysiological systems have attracted attention because of their use in drug screening. However, it is challenging to measure cell functions in real time using a device. In this study, we developed a cell culture device using a porous membrane electrode for in situ electrochemical glucose measurements for cell analysis. First, a porous membrane electrode was fabricated and electrochemically evaluated for enzyme-free glucose measurement. Subsequently, the glucose uptake of MCF-7 spheroids was evaluated using living spheroids, fixed spheroids, supernatants, and glucose transporter inhibitor-treated spheroids. Conventionally, the direct optical measurement of glucose uptake requires fluorescence-labeled glucose derivatives. In addition, the glucose uptake can be evaluated by measuring the glucose concentration in the medium by optical or electrochemical measurements. However, glucose needs to be consumed in the entire cell culture medium, which needs a long culture time. In contrast, our system can measure glucose in approximately 5 min without any labels because of in situ electrochemical measurements. This system can be used for in situ measurements in in vitro cell culture systems, including organ-on-a-chip for drug screening.
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Affiliation(s)
- Yoshinobu Utagawa
- Graduate
School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Kosuke Ino
- Graduate
School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Yasuhiko Shinoda
- Organic
Device Development Department, Material Development Division, Toyoda Gosei Co., Ltd., Ama 490-1207, Japan
| | - Masateru Yamazaki
- Organic
Device Development Department, Material Development Division, Toyoda Gosei Co., Ltd., Ama 490-1207, Japan
| | - Hiroya Abe
- Graduate
School of Engineering, Tohoku University, Sendai 980-8579, Japan
- Frontier
Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-0845, Japan
| | - Hitoshi Shiku
- Graduate
School of Engineering, Tohoku University, Sendai 980-8579, Japan
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2
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Li H, Xiao N, Jiang M, Long J, Li Z, Zhu Z. Advances of Transition Metal-Based Electrochemical Non-enzymatic Glucose Sensors for Glucose Analysis: A Review. Crit Rev Anal Chem 2024:1-37. [PMID: 38635407 DOI: 10.1080/10408347.2024.2339955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Glucose concentration is a crucial parameter for assessing human health. Over recent years, non-enzymatic electrochemical glucose sensors have drawn considerable attention due to their substantial progress. This review explores the common mechanism behind the transition metal-based electrocatalytic oxidation of glucose molecules through classical electrocatalytic frameworks like the Pletcher model and the Hydrous Oxide-Adatom Mediator model (IHOAM), as well as the redox reactions at the transition metal centers. It further compiles the electrochemical characterization techniques, associated formulas, and their ensuing conclusions pertinent to transition metal-based non-enzymatic electrochemical glucose sensors. Subsequently, the review covers the latest advancements in the field of transition metal-based active materials and support materials used in non-enzymatic electrochemical glucose sensors in the last decade (2014-2023). Additionally, it presents a comprehensive classification of representative studies according to the active metal catalysts components involved.
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Affiliation(s)
- Haotian Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Nan Xiao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Mengyi Jiang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Jianjun Long
- Danyang Development Zone, Jiangsu Yuwell-POCT Biological Technology Co., Ltd, Danyang, China
| | - Zhanhong Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Zhigang Zhu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
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3
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Utagawa Y, Ino K, Hiramoto K, Iwase K, Nashimoto Y, Honma I, Shiku H. Vasculature-on-a-Chip with a Porous Membrane Electrode for In Situ Electrochemical Detection of Nitric Oxide Released from Endothelial Cells. Anal Chem 2023; 95:18158-18165. [PMID: 38014683 DOI: 10.1021/acs.analchem.3c03684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Vasculature-on-a-chip is a microfluidic cell culture device used for modeling vascular functions by culturing endothelial cells. Porous membranes are widely used to create cell culture environments. However, in situ real-time measurements of cellular metabolites in microchannels are challenging. In this study, a novel microfluidic device with a porous membrane electrode was developed for the in situ monitoring of nitric oxide (NO) released by endothelial cells in real time. In this system, a porous Au membrane electrode was placed directly beneath the cells for in situ and real-time measurements of NO, a biomarker of endothelial cells. First, the device was electrochemically characterized to construct a calibration plot for NO. Next, NO released by human umbilical vein endothelial cells under l-arginine stimulation was successfully quantified. Furthermore, the changes in NO release with culture time (in days) using the same sample were successfully recorded by exploiting minimally invasive measurements. This is the first report on the combination of a microfluidic device and porous membrane electrode for the electrochemical analysis of endothelial cells. This device will contribute to the development of organ-on-a-chip technology for real-time in situ cell analyses.
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Affiliation(s)
- Yoshinobu Utagawa
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Kosuke Ino
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Kaoru Hiramoto
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-0845, Japan
| | - Kazuyuki Iwase
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Yuji Nashimoto
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo 101-0062, Japan
| | - Itaru Honma
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Hitoshi Shiku
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
- Graduate School of Environmental Studies, Tohoku University, Sendai 980-8759, Japan
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4
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Scandurra A, Iacono V, Boscarino S, Scalese S, Grimaldi MG, Ruffino F. Model of Chronoamperometric Response towards Glucose Sensing by Arrays of Gold Nanostructures Obtained by Laser, Thermal and Wet Processes. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1163. [PMID: 37049255 PMCID: PMC10097189 DOI: 10.3390/nano13071163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 06/19/2023]
Abstract
Non-enzymatic electrochemical glucose sensors are of great importance in biomedical applications, for the realization of portable diabetic testing kits and continuous glucose monitoring systems. Nanostructured materials show a number of advantages in the applications of analytical electrochemistry, compared to macroscopic electrodes, such as great sensitivity and little dependence on analyte diffusion close to the electrode-solution interface. Obtaining electrodes based on nanomaterials without using expensive lithographic techniques represents a great added value. In this paper, we modeled the chronoamperometric response towards glucose determination by four electrodes consisting of nanostructured gold onto graphene paper (GP). The nanostructures were obtained by electrochemical etch, thermal and laser processes of thin gold layer. We addressed experiments obtaining different size and shape of gold nanostructures. Electrodes have been characterized by field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), cyclic voltammetry, and chronoamperometry. We modeled the current-time response at the potential corresponding to two-electrons oxidation process of glucose by the different nanostructured gold systems. The finest nanostructures of 10-200 nm were obtained by laser dewetting of 17 nm thin and 300 °C thermal dewetting of 8 nm thin gold layers, and they show that semi-infinite linear diffusion mechanism predominates over radial diffusion. Electrochemical etching and 17 nm thin gold layer dewetted at 400 °C consist of larger gold islands up to 1 μm. In the latter case, the current-time curves can be fitted by a two-phase exponential decay function that relies on the mixed second-order formation of adsorbed glucose intermediate followed by its first-order decay to gluconolactone.
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Affiliation(s)
- Antonino Scandurra
- Department of Physics and Astronomy “Ettore Majorana”, University of Catania, via Santa Sofia 64, 95123 Catania, Italy; (V.I.); (S.B.); (M.G.G.); (F.R.)
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM, Catania University Unit), via Santa Sofia 64, 95123 Catania, Italy
- Research Unit of the University of Catania, National Interuniversity Consortium of Materials Science and Technology (INSTM-UdR of Catania), via S. Sofia 64, 95125 Catania, Italy
| | - Valentina Iacono
- Department of Physics and Astronomy “Ettore Majorana”, University of Catania, via Santa Sofia 64, 95123 Catania, Italy; (V.I.); (S.B.); (M.G.G.); (F.R.)
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM, Catania University Unit), via Santa Sofia 64, 95123 Catania, Italy
| | - Stefano Boscarino
- Department of Physics and Astronomy “Ettore Majorana”, University of Catania, via Santa Sofia 64, 95123 Catania, Italy; (V.I.); (S.B.); (M.G.G.); (F.R.)
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM, Catania University Unit), via Santa Sofia 64, 95123 Catania, Italy
| | - Silvia Scalese
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), Ottava Strada, 5 (Zona Industriale), 95121 Catania, Italy;
| | - Maria Grazia Grimaldi
- Department of Physics and Astronomy “Ettore Majorana”, University of Catania, via Santa Sofia 64, 95123 Catania, Italy; (V.I.); (S.B.); (M.G.G.); (F.R.)
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM, Catania University Unit), via Santa Sofia 64, 95123 Catania, Italy
| | - Francesco Ruffino
- Department of Physics and Astronomy “Ettore Majorana”, University of Catania, via Santa Sofia 64, 95123 Catania, Italy; (V.I.); (S.B.); (M.G.G.); (F.R.)
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM, Catania University Unit), via Santa Sofia 64, 95123 Catania, Italy
- Research Unit of the University of Catania, National Interuniversity Consortium of Materials Science and Technology (INSTM-UdR of Catania), via S. Sofia 64, 95125 Catania, Italy
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Wasfi A, Al Hamarna A, Al Shehhi OMH, Al Ameri HFM, Awwad F. Graphene Nanoribbon Field Effect Transistor Simulations for the Detection of Sugar Molecules: Semi-Empirical Modeling. SENSORS (BASEL, SWITZERLAND) 2023; 23:3010. [PMID: 36991722 PMCID: PMC10051405 DOI: 10.3390/s23063010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/26/2023] [Accepted: 03/07/2023] [Indexed: 06/19/2023]
Abstract
Graphene has remarkable characteristics that make it a potential candidate for optoelectronics and electronics applications. Graphene is a sensitive material that reacts to any physical variation in its environment. Due to its extremely low intrinsic electrical noise, graphene can detect even a single molecule in its proximity. This feature makes graphene a potential candidate for identifying a wide range of organic and inorganic compounds. Graphene and its derivatives are considered one of the best materials to detect sugar molecules due to their electronic properties. Graphene has low intrinsic noise, making it an ideal membrane for detecting low concentrations of sugar molecules. In this work, a graphene nanoribbon field effect transistor (GNR-FET) is designed and utilized to identify sugar molecules such as fructose, xylose, and glucose. The variation in the current of the GNR-FET in the presence of each of the sugar molecules is utilized as the detection signal. The designed GNR-FET shows a clear change in the device density of states, transmission spectrum, and current in the presence of each of the sugar molecules. The simulated sensor is made of a pair of metallic zigzag graphene nanoribbons (ZGNR) joint via a channel of armchair graphene nanoribbon (AGNR) and a gate. The Quantumwise Atomistix Toolkit (ATK) is used to design and conduct the nanoscale simulations of the GNR-FET. Semi-empirical modeling, along with non-equilibrium Green's functional theory (SE + NEGF), is used to develop and study the designed sensor. This article suggests that the designed GNR transistor has the potential to identify each of the sugar molecules in real time with high accuracy.
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Affiliation(s)
- Asma Wasfi
- Electrical and Communication Engineering Department, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Ahmed Al Hamarna
- Electrical and Communication Engineering Department, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Omar Mohammed Hasani Al Shehhi
- Chemical and Petroleum Engineering Department, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Hazza Fahad Muhsen Al Ameri
- Mechanical and Aerospace Engineering Department, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Falah Awwad
- Electrical and Communication Engineering Department, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
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6
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Guati C, Gomez-Coma L, Fallanza M, Ortiz I. Progress on the influence of non-enzymatic electrodes characteristics on the response to glucose detection: a review (2016–2022). REV CHEM ENG 2023. [DOI: 10.1515/revce-2022-0058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Abstract
Glucose sensing devices have experienced significant progress in the last years in response to the demand for cost-effective monitoring. Thus, research efforts have been focused on achieving reliable, selective, and sensitive sensors able to monitor the glucose level in different biofluids. The development of enzyme-based devices is challenged by poor stability, time-consuming, and complex purification procedures, facts that have given rise to the synthesis of enzyme-free sensors. Recent advances focus on the use of different components: metal-organic frameworks (MOFs), carbon nanomaterials, or metal oxides. Motivated by this topic, several reviews have been published addressing the sensor materials and synthesis methods, gathering relevant information for the development of new nanostructures. However, the abundant information has not concluded yet in commercial devices and is not useful from an engineering point of view. The dependence of the electrode response on its physico-chemical nature, which would determine the selection and optimization of the materials and synthesis method, remains an open question. Thus, this review aims to critically analyze from an engineering vision the existing information on non-enzymatic glucose electrodes; the analysis is performed linking the response in terms of sensitivity when interferences are present, stability, and response under physiological conditions to the electrode characteristics.
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Affiliation(s)
- Carlota Guati
- Chemical and Biomolecular Engineering Department , University of Cantabria , 39005 Santander , Spain
| | - Lucía Gomez-Coma
- Chemical and Biomolecular Engineering Department , University of Cantabria , 39005 Santander , Spain
| | - Marcos Fallanza
- Chemical and Biomolecular Engineering Department , University of Cantabria , 39005 Santander , Spain
| | - Inmaculada Ortiz
- Chemical and Biomolecular Engineering Department , University of Cantabria , 39005 Santander , Spain
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7
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Wasfi A, Awwad S, Hussein M, Awwad F. Sugar Molecules Detection via C 2N Transistor-Based Sensor: First Principles Modeling. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:700. [PMID: 36839068 PMCID: PMC9967288 DOI: 10.3390/nano13040700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/05/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Real-time detection of sugar molecules is critical for preventing and monitoring diabetes and for food quality evaluation. In this article, a field effect transistor (FET) based on two-dimensional nitrogenated holey graphene (C2N) was designed, developed, and tested to identify the sugar molecules including xylose, fructose, and glucose. Both density functional theory and non-equilibrium Green's function (DFT + NEGF) were used to study the designed device. Several electronic characteristics were studied, including work function, density of states, electrical current, and transmission spectrum. The proposed sensor is made of a pair of gold electrodes joint through a channel of C2N and a gate was placed underneath the channel. The C2N monolayer distinctive characteristics are promising for glucose sensors to detect blood sugar and for sugar molecules sensors to evaluate food quality. The electronic transport characteristics of the sensor resulted in a unique signature for each of the sugar molecules. This proposed work suggests that the developed C2N transistor-based sensor could detect sugar molecules with high accuracy.
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Affiliation(s)
- Asma Wasfi
- Department of Electrical and Communication Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Sarah Awwad
- Specialized Rehabilitation Hospital, Abu Dhabi, United Arab Emirates
| | - Mousa Hussein
- Department of Electrical and Communication Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Falah Awwad
- Department of Electrical and Communication Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
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8
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Scandurra A, Censabella M, Boscarino S, Condorelli GG, Grimaldi MG, Ruffino F. Fabrication of Cu(II) oxide-hydroxide nanostructures onto graphene paper by laser and thermal processes for sensitive nano-electrochemical sensing of glucose. NANOTECHNOLOGY 2021; 33:045501. [PMID: 34610585 DOI: 10.1088/1361-6528/ac2d0b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
Glucose electrochemical sensors based on nanostructures of CuO/Cu(OH)2onto graphene paper were prepared by thermal (solid) and nanosecond pulsed laser (molten phase) dewetting of a CuO layer 6 nm thin deposited by sputtering. Dewetted systems, obtained without the use of any binder, act as array of nanoelectrodes. Solid state and molten phase dewetting produce nanostructures of copper oxide-hydroxide with different average size, shape and surface composition. Molten phase dewetting originates particles with size below 100 nm, while solid state dewetting produces particles with average size of about 200 nm. Moreover, molten phase dewetting produce drop-shaped nanostructures, conversely nanostructures derived from solid state dewetting are multifaceted. X-ray photoelectron spectroscopy (XPS) characterization revealed that the surface of nanostructures is formed by a copper(II) species CuO and Cu(OH)2. Shape of anodic branch of the cyclic voltammograms of glucose in alkali solution evidenced a convergent diffusion mechanism. Analytical performances in amperometric mode are as good as or better than other sensors based on copper oxide. Amperometric detection of glucose was done at potential as low as 0.4 V versus saturated calomel electrode by both types of electrodes. Linear range from 50μM to 10 mM, sensitivity ranging from 7 to 43μA cm-2mM-1and detection limit of 7μM was obtained. Good analytical performances were obtained by laser dewetted electrodes with a low copper content up to 1.2 by atoms percentage of the surface. Analytical performance of the proposed electrodes is compliant for the determination of glucose both in blood serum, saliva or tear.
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Affiliation(s)
- Antonino Scandurra
- Department of Physics and Astronomy Ettore Majorana of University of Catania, via Santa Sofia 64, 95123 Catania, Italy
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), via Santa Sofia 64, 95123 Catania, Italy
| | - Maria Censabella
- Department of Physics and Astronomy Ettore Majorana of University of Catania, via Santa Sofia 64, 95123 Catania, Italy
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), via Santa Sofia 64, 95123 Catania, Italy
| | - Stefano Boscarino
- Department of Physics and Astronomy Ettore Majorana of University of Catania, via Santa Sofia 64, 95123 Catania, Italy
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), via Santa Sofia 64, 95123 Catania, Italy
| | | | - Maria Grazia Grimaldi
- Department of Physics and Astronomy Ettore Majorana of University of Catania, via Santa Sofia 64, 95123 Catania, Italy
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), via Santa Sofia 64, 95123 Catania, Italy
| | - Francesco Ruffino
- Department of Physics and Astronomy Ettore Majorana of University of Catania, via Santa Sofia 64, 95123 Catania, Italy
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), via Santa Sofia 64, 95123 Catania, Italy
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9
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Pak M, Moshaii A, Nikkhah M, Abbasian S, Siampour H. Nickel-gold bimetallic nanostructures with the improved electrochemical performance for non-enzymatic glucose determination. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115729] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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10
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Zheng W, Li Y, Tsang CS, So PK, Yoon Suk Lee L. Stabilizer-free bismuth nanoparticles for selective polyol electrooxidation. iScience 2021; 24:102342. [PMID: 34027316 PMCID: PMC8134487 DOI: 10.1016/j.isci.2021.102342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/22/2021] [Accepted: 03/17/2021] [Indexed: 12/03/2022] Open
Abstract
Bismuth is the least toxic element among heavy metals, an outstanding advantage for environmental and health considerations. Yet, utilizing bismuth as anodic electrocatalyst is hindered by the formation of a spreading Bi(OH)3 inhibitor layer during the anodic process. Herein, we report that bismuth nanoparticles, produced using laser ablation, can avoid such drawbacks. The production of Bi(V) species assists polyol electrooxidation. For glucose, instead of the commonly reported gluconic acid as the product, the Bi(V) species enables highly selective oxidation and C–C bond cleavage to produce arabinonic acid, erythronic acid, and eventually glyceric acid. We not only generate high-valent Bi(V) species for catalytic applications, especially for bioelectrocatalysis where the less toxic bismuth is highly appreciated, but also present Bi nanoparticle as a highly selective electrocatalyst that can break C–C bond. We believe that Bi electrocatalyst can find broader applications in electrochemical biomass conversion and electrosynthesis. Stabilizer-free bismuth nanoparticles (Bi NPs) are synthesized by laser ablation Bi NPs show activity toward polyol electrooxidation, breaking C-C bond The in situ generated Bi(V) is essential for the electrocatalytic oxidation Unlike Bi polycrystal, surface oxide layers do not inhibit the activity of Bi NPs
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Affiliation(s)
- Weiran Zheng
- Department of Applied Biology and Chemical Technology and the State Key Laboratory of Chemical Biology and Drug Discovery, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Yong Li
- Department of Applied Biology and Chemical Technology and the State Key Laboratory of Chemical Biology and Drug Discovery, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Chui-Shan Tsang
- University Research Facility in Life Science, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Pui-Kin So
- University Research Facility in Life Science, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Lawrence Yoon Suk Lee
- Department of Applied Biology and Chemical Technology and the State Key Laboratory of Chemical Biology and Drug Discovery, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China.,Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
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11
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Li L, Zhang B, Wang S, Fan F, Chen J, Li Y, Fu Y. Bimetallic NiCo Metal-Organic Framework-Derived Hierarchical Spinel NiCo2O4 Microflowers for Efficient Non-Enzymatic Glucose Sensing. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200344] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Linlin Li
- College of Science, Northeastern University, Shenyang 100819, P. R. China
| | - Bing Zhang
- College of Science, Northeastern University, Shenyang 100819, P. R. China
| | - Sha Wang
- College of Science, Northeastern University, Shenyang 100819, P. R. China
| | - Fuqiang Fan
- College of Science, Northeastern University, Shenyang 100819, P. R. China
| | - Junyi Chen
- College of Life Science, Tarim University, Xinjiang Uygur Autonomous Region, Alaer 843300, P. R. China
| | - Yunong Li
- College of Science, Northeastern University, Shenyang 100819, P. R. China
| | - Yu Fu
- College of Science, Northeastern University, Shenyang 100819, P. R. China
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12
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Pinheiro T, Ferrão J, Marques AC, Oliveira MJ, Batra NM, Costa PMFJ, Macedo MP, Águas H, Martins R, Fortunato E. Paper-Based In-Situ Gold Nanoparticle Synthesis for Colorimetric, Non-Enzymatic Glucose Level Determination. NANOMATERIALS 2020; 10:nano10102027. [PMID: 33066658 PMCID: PMC7602483 DOI: 10.3390/nano10102027] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 09/29/2020] [Accepted: 10/11/2020] [Indexed: 12/23/2022]
Abstract
Due to its properties, paper represents an alternative to perform point-of-care tests for colorimetric determination of glucose levels, providing simple, rapid, and inexpensive means of diagnosis. In this work, we report the development of a novel, rapid, disposable, inexpensive, enzyme-free, and colorimetric paper-based assay for glucose level determination. This sensing strategy is based on the synthesis of gold nanoparticles (AuNPs) by reduction of a gold salt precursor, in which glucose acts simultaneously as reducing and capping agent. This leads to a direct measurement of glucose without any enzymes or depending on the detection of intermediate products as in conventional enzymatic colorimetric methods. Firstly, we modelled the synthesis reaction of AuNPs to determine the optical, morphological, and kinetic properties and their manipulation for glucose sensing, by determining the influence of each of the reaction precursors towards the produced AuNPs, providing a guide for the manipulation of nucleation and growth. The adaptation of this synthesis into the developed paper platform was tested and calibrated using different standard solutions with physiological concentrations of glucose. The response of the colorimetric signals obtained with this paper-based platform showed a linear behavior until 20 mM, required for glycemic control in diabetes, using the Red × Value/Grey feature combination as a calibration metric, to describe the variations in color intensity and hue in the spot test zone. The colorimetric sensor revealed a detection limit of 0.65 mM, depending on calibration metric and sensitivity of 0.013 AU/mM for a linear sensitivity range from 1.25 to 20 mM, with high specificity for the determination of glucose in complex standards with other common reducing interferents and human serum.
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Affiliation(s)
- Tomás Pinheiro
- CENIMAT/i3N, Materials Science Department, Faculdade de Ciência e Tecnologia–Universidade Nova de Lisboa, 2829-516 Lisbon, Portugal; (T.P.); (J.F.); (A.C.M.); (M.J.O.); (H.Á.); (R.M.)
| | - João Ferrão
- CENIMAT/i3N, Materials Science Department, Faculdade de Ciência e Tecnologia–Universidade Nova de Lisboa, 2829-516 Lisbon, Portugal; (T.P.); (J.F.); (A.C.M.); (M.J.O.); (H.Á.); (R.M.)
| | - Ana C. Marques
- CENIMAT/i3N, Materials Science Department, Faculdade de Ciência e Tecnologia–Universidade Nova de Lisboa, 2829-516 Lisbon, Portugal; (T.P.); (J.F.); (A.C.M.); (M.J.O.); (H.Á.); (R.M.)
| | - Maria J. Oliveira
- CENIMAT/i3N, Materials Science Department, Faculdade de Ciência e Tecnologia–Universidade Nova de Lisboa, 2829-516 Lisbon, Portugal; (T.P.); (J.F.); (A.C.M.); (M.J.O.); (H.Á.); (R.M.)
| | - Nitin M. Batra
- Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (N.M.B.); (P.M.F.J.C.)
| | - Pedro M. F. J. Costa
- Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia; (N.M.B.); (P.M.F.J.C.)
| | - M. Paula Macedo
- CEDOC, Chronic Disease Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Campo Mártires da Pátria, 1150-190 Lisbon, Portugal;
- Education and Research Centre, APDP-Diabetes Portugal (APDP-ERC), 1250-203 Lisbon, Portugal
| | - Hugo Águas
- CENIMAT/i3N, Materials Science Department, Faculdade de Ciência e Tecnologia–Universidade Nova de Lisboa, 2829-516 Lisbon, Portugal; (T.P.); (J.F.); (A.C.M.); (M.J.O.); (H.Á.); (R.M.)
| | - Rodrigo Martins
- CENIMAT/i3N, Materials Science Department, Faculdade de Ciência e Tecnologia–Universidade Nova de Lisboa, 2829-516 Lisbon, Portugal; (T.P.); (J.F.); (A.C.M.); (M.J.O.); (H.Á.); (R.M.)
| | - Elvira Fortunato
- CENIMAT/i3N, Materials Science Department, Faculdade de Ciência e Tecnologia–Universidade Nova de Lisboa, 2829-516 Lisbon, Portugal; (T.P.); (J.F.); (A.C.M.); (M.J.O.); (H.Á.); (R.M.)
- Correspondence:
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Abdullah Mirzaie R, Anaraki Firooz A, Ghorbani P. The effect of reaction layer composition on Pt/NiO function for glucose oxidation reaction in neutral media. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:111061. [PMID: 32993984 DOI: 10.1016/j.msec.2020.111061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 01/17/2023]
Abstract
This study shows the application of carbon supported electrodes containing Pt/NiO nanoparticles to catalyze the electrochemical oxidation of glucose in neutral media. In particular, this study describes the effect of the Pt content and type of carbon (carbon black, expanded graphite, or charcoal active) in the reaction layer on this oxidation process in neutral media. Pt/NiO nanoparticles were synthesized by a simple hydrothermal method, and further characterized by scanning electron microscopy (SEM), X-ray diffraction spectroscopy (XRD), and cyclic voltammetry. These nanoparticles were used to modify carbon electrodes. The effectiveness of these electrodes for electrochemical glucose oxidation was evaluated. The results revealed that the catalytic activity of the electrodes depends on the content of Pt/NiO nanoparticles and the type of carbon. The 10% Pt/NiO with 90% loading (use of activated charcoal in the reaction layer) as optimum electrode indicated good stability after 1200 voltammetry cycles. This modified electrode was highly active for glucose oxidation in neutral media, which could be attributed to the presence of Pt/NiO nanoparticles as catalyst and high surface area of activated charcoal on the electrode surface.
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Affiliation(s)
- Rasol Abdullah Mirzaie
- Fuel Cell Research Laboratory, Department of Chemistry, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran, Iran.
| | - Azam Anaraki Firooz
- Fuel Cell Research Laboratory, Department of Chemistry, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran, Iran; Catalytic Processes and Materials Group, Faculty of Science and Technology, MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - Payam Ghorbani
- Fuel Cell Research Laboratory, Department of Chemistry, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran, Iran
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Sakr MA, Elgammal K, Delin A, Serry M. Performance-Enhanced Non-Enzymatic Glucose Sensor Based on Graphene-Heterostructure. SENSORS (BASEL, SWITZERLAND) 2019; 20:E145. [PMID: 31878328 PMCID: PMC6982948 DOI: 10.3390/s20010145] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/16/2019] [Accepted: 12/20/2019] [Indexed: 12/14/2022]
Abstract
Non-enzymatic glucose sensing is a crucial field of study because of the current market demand. This study proposes a novel design of glucose sensor with enhanced selectivity and sensitivity by using graphene Schottky diodes, which is composed of graphene (G)/platinum oxide (PtO)/n-silicon (Si) heterostructure. The sensor was tested with different glucose concentrations and interfering solutions to investigate its sensitivity and selectivity. Different structures of the device were studied by adjusting the platinum oxide film thickness to investigate its catalytic activity. It was found that the film thickness plays a significant role in the efficiency of glucose oxidation and hence in overall device sensitivity. 0.8-2 μA output current was obtained in the case of 4-10 mM with a sensitivity of 0.2 A/mM.cm2. Besides, results have shown that 0.8 A and 15 A were obtained by testing 4 mM glucose on two different PtO thicknesses, 30 nm and 50 nm, respectively. The sensitivity of the device was enhanced by 150% (i.e., up to 30 A/mM.cm2) by increasing the PtO layer thickness. This was attributed to both the increase of the number of active sites for glucose oxidation as well as the increase in the graphene layer thickness, which leads to enhanced charge carriers concentration and mobility. Moreover, theoretical investigations were conducted using the density function theory (DFT) to understand the detection method and the origins of selectivity better. The working principle of the sensors puts it in a competitive position with other non-enzymatic glucose sensors. DFT calculations provided a qualitative explanation of the charge distribution across the graphene sheet within a system of a platinum substrate with D-glucose molecules above. The proposed G/PtO/n-Si heterostructure has proven to satisfy these factors, which opens the door for further developments of more reliable non-enzymatic glucometers for continuous glucose monitoring systems.
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Affiliation(s)
- Mahmoud A. Sakr
- Graduate Program in Nanotechnology, The American University in Cairo (AUC), New Cairo 11835, Egypt;
- Department of Mechanical Engineering, The American University in Cairo (AUC), New Cairo 11835, Egypt
| | - Karim Elgammal
- Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden; (K.E.); (A.D.)
- Swedish e-Science Research Center (SeRC), KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Anna Delin
- Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden; (K.E.); (A.D.)
- Swedish e-Science Research Center (SeRC), KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
- Department of Physics and Astronomy, Materials Theory Division, Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - Mohamed Serry
- Department of Mechanical Engineering, The American University in Cairo (AUC), New Cairo 11835, Egypt
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Dewetted Gold Nanostructures onto Exfoliated Graphene Paper as High Efficient Glucose Sensor. NANOMATERIALS 2019; 9:nano9121794. [PMID: 31888252 PMCID: PMC6955950 DOI: 10.3390/nano9121794] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/09/2019] [Accepted: 12/13/2019] [Indexed: 11/17/2022]
Abstract
Non-enzymatic electrochemical glucose sensing was obtained by gold nanostructures on graphene paper, produced by laser or thermal dewetting of 1.6 and 8 nm-thick Au layers, respectively. Nanosecond laser annealing produces spherical nanoparticles (AuNPs) through the molten-phase dewetting of the gold layer and simultaneous exfoliation of the graphene paper. The resulting composite electrodes were characterized by X-ray photoelectron spectroscopy, cyclic voltammetry, scanning electron microscopy, micro Raman spectroscopy and Rutherford back-scattering spectrometry. Laser dewetted electrode presents graphene nanoplatelets covered by spherical AuNPs. The sizes of AuNPs are in the range of 10-150 nm. A chemical shift in the XPS Au4f core-level of 0.25-0.3 eV suggests the occurrence of AuNPs oxidation, which are characterized by high stability under the electrochemical test. Thermal dewetting leads to electrodes characterized by faceted not oxidized gold structures. Glucose was detected in alkali media at potential of 0.15-0.17 V vs. saturated calomel electrode (SCE), in the concentration range of 2.5μM-30 mM, exploiting the peak corresponding to the oxidation of two electrons. Sensitivity of 1240 µA mM-1 cm-2, detection limit of 2.5 μM and quantifications limit of 20 μM were obtained with 8 nm gold equivalent thickness. The analytical performances are very promising and comparable to the actual state of art concerning gold based electrodes.
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Hovancová J, Šišoláková I, Vanýsek P, Oriňaková R, Shepa I, Vojtko M, Oriňak A. Nanostructured Gold Microelectrodes for Non‐enzymatic Glucose Sensor. ELECTROANAL 2019. [DOI: 10.1002/elan.201900163] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jana Hovancová
- Department of Physical ChemistryUniversity of P.J. Šafárik in Košice Moyzesova 11 040 01 Košice Slovakia
| | - Ivana Šišoláková
- Department of Physical ChemistryUniversity of P.J. Šafárik in Košice Moyzesova 11 040 01 Košice Slovakia
| | - Petr Vanýsek
- Institute of ElectrotechnologyTechnical University of Brno Technická 10 Brno 602 00 Czech Republic
| | - Renáta Oriňaková
- Department of Physical ChemistryUniversity of P.J. Šafárik in Košice Moyzesova 11 040 01 Košice Slovakia
| | - Ivan Shepa
- Institute of Materials ResearchSlovak Academy of Sciences Watsonova 47 040 01 Košice Slovakia
| | - Marek Vojtko
- Institute of Materials ResearchSlovak Academy of Sciences Watsonova 47 040 01 Košice Slovakia
| | - Andrej Oriňak
- Department of Physical ChemistryUniversity of P.J. Šafárik in Košice Moyzesova 11 040 01 Košice Slovakia
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Non-enzymatic flexible glucose sensing platform based on nanostructured TiO2 – Au composite. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.02.040] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Lah NAC, Trigueros S. Synthesis and modelling of the mechanical properties of Ag, Au and Cu nanowires. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2019; 20:225-261. [PMID: 30956731 PMCID: PMC6442207 DOI: 10.1080/14686996.2019.1585145] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 02/16/2019] [Accepted: 02/16/2019] [Indexed: 05/04/2023]
Abstract
The recent interest to nanotechnology aims not only at device miniaturisation, but also at understanding the effects of quantised structure in materials of reduced dimensions, which exhibit different properties from their bulk counterparts. In particular, quantised metal nanowires made of silver, gold or copper have attracted much attention owing to their unique intrinsic and extrinsic length-dependent mechanical properties. Here we review the current state of art and developments in these nanowires from synthesis to mechanical properties, which make them leading contenders for next-generation nanoelectromechanical systems. We also present theories of interatomic interaction in metallic nanowires, as well as challenges in their synthesis and simulation.
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Affiliation(s)
- Nurul Akmal Che Lah
- Innovative Manufacturing, Mechatronics and Sports Lab (iMAMS), Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, Pekan, Malaysia
- CONTACT Nurul Akmal Che Lah
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Tran VK, Ko E, Geng Y, Kim MK, Jin GH, Son SE, Hur W, Seong GH. Micro-patterning of single-walled carbon nanotubes and its surface modification with gold nanoparticles for electrochemical paper-based non-enzymatic glucose sensor. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.08.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Lacina K, Sopoušek J, Čunderlová V, Hlaváček A, Václavek T, Lacinová V. Biosensing based on electrochemical impedance spectroscopy: Influence of the often-ignored molecular charge. Electrochem commun 2018. [DOI: 10.1016/j.elecom.2018.07.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Escalona-Villalpando R, Gurrola M, Trejo G, Guerra-Balcázar M, Ledesma-García J, Arriaga L. Electrodeposition of gold on oxidized and reduced graphite surfaces and its influence on glucose oxidation. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.03.037] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Li W, Qi H, Wang B, Wang Q, Wei S, Zhang X, Wang Y, Zhang L, Cui X. Ultrathin NiCo 2O 4 nanowalls supported on a 3D nanoporous gold coated needle for non-enzymatic amperometric sensing of glucose. Mikrochim Acta 2018; 185:124. [PMID: 29594748 DOI: 10.1007/s00604-017-2663-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 12/31/2017] [Indexed: 11/29/2022]
Abstract
A disposable needle-type of hybrid electrode was prepared from a core of stainless steel needle whose surface was modified with a 3D nanoporous gold/NiCo2O4 nanowall hybrid structure for electrochemical non-enzymatic glucose detection. This hybrid electrode, best operated at 0.45 V (vs. SCE) in solutions of pH 13 has a linear response in the 0.01 to 21 mM glucose concentration range, a response time of <1 s, and a 1 μM detection limit (at an S/N ratio of 3). The remarkable enhancement compared to the solid gold/NiCo2O4 and stainless steel/NiCo2O4 hybrid electrodes in electrochemical performance is assumed to originate from the good electrical conductivity and large surface area of the hybrid electrode, which enhance the transport of mass and charge during electrochemical reactions. This biosensor was also applied to real sample analysis with little interferences. The electrode is disposable and considered to be a promising tool for non-enzymatic sensing of glucose in a variety of practical situations. Graphical abstract Ultrathin NiCo2O4 nanowalls supported on nanoporous gold that is coated on a stainless steel needle was fabricated for sensitive non-enzymatic amperometric sensing of glucose.
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Affiliation(s)
- Weiwei Li
- State Key Laboratory of Automotive Simulation and Control, Department of Materials Science, Jilin University, Changchun, 130012, China
| | - Hui Qi
- The Second Hospital of Jilin University, Changchun, 130041, People's Republic of China
| | - Baogang Wang
- The First Hospital of Jilin University, Changchun, 130041, People's Republic of China
| | - Qiyu Wang
- Key Laboratory for Renewable Energy, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Shuting Wei
- State Key Laboratory of Automotive Simulation and Control, Department of Materials Science, Jilin University, Changchun, 130012, China
| | - Xiaolin Zhang
- State Key Laboratory of Automotive Simulation and Control, Department of Materials Science, Jilin University, Changchun, 130012, China
| | - Ying Wang
- State Key Laboratory of Automotive Simulation and Control, Department of Materials Science, Jilin University, Changchun, 130012, China
| | - Lei Zhang
- State Key Laboratory of Automotive Simulation and Control, Department of Materials Science, Jilin University, Changchun, 130012, China
| | - Xiaoqiang Cui
- State Key Laboratory of Automotive Simulation and Control, Department of Materials Science, Jilin University, Changchun, 130012, China.
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Podešva P, Gablech I, Neužil P. Nanostructured Gold Microelectrode Array for Ultrasensitive Detection of Heavy Metal Contamination. Anal Chem 2017; 90:1161-1167. [PMID: 29192490 DOI: 10.1021/acs.analchem.7b03725] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Pavel Podešva
- Northwestern Polytechnical University, School of Mechanical
Engineering, Department of Microsystem Engineering, 127 West Youyi Road, Xi’an, Shaanxi 710072, P. R. China
| | - Imrich Gablech
- Central
European Institute of Technology, Brno University of Technology (BUT), Purkyňova 656/123, 612 00 Brno, Czech Republic
| | - Pavel Neužil
- Northwestern Polytechnical University, School of Mechanical
Engineering, Department of Microsystem Engineering, 127 West Youyi Road, Xi’an, Shaanxi 710072, P. R. China
- Central
European Institute of Technology, Brno University of Technology (BUT), Purkyňova 656/123, 612 00 Brno, Czech Republic
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Felix S, Kollu P, Grace AN. Electrochemical performance of Ag–CuO nanocomposites towards glucose sensing. ACTA ACUST UNITED AC 2017. [DOI: 10.1080/14328917.2017.1358507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
| | - Pratap Kollu
- CASEST, School of Physics, University of Hyderabad, Hyderabad, India
- Newton Alumnus Researcher – The Royal Society London, Thin Film Magnetism group, Cavendish Laboratory, University of Cambridge, Cambridge, UK
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Giner-Sanz J, Ortega E, Pérez-Herranz V. Harmonic analysis based method for linearity assessment and noise quantification in electrochemical impedance spectroscopy measurements: Theoretical formulation and experimental validation for Tafelian systems. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.06.133] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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