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Liu X, Jia Y, Zheng C. Recent progress in Surface-Enhanced Raman Spectroscopy detection of biomarkers in liquid biopsy for breast cancer. Front Oncol 2024; 14:1400498. [PMID: 39040452 PMCID: PMC11260621 DOI: 10.3389/fonc.2024.1400498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 06/24/2024] [Indexed: 07/24/2024] Open
Abstract
Breast cancer is the most commonly diagnosed cancer in women globally and a leading cause of cancer-related mortality. However, current detection methods, such as X-rays, ultrasound, CT scans, MRI, and mammography, have their limitations. Recently, with the advancements in precision medicine and technologies like artificial intelligence, liquid biopsy, specifically utilizing Surface-Enhanced Raman Spectroscopy (SERS), has emerged as a promising approach to detect breast cancer. Liquid biopsy, as a minimally invasive technique, can provide a temporal reflection of breast cancer occurrence and progression, along with a spatial representation of overall tumor information. SERS has been extensively employed for biomarker detection, owing to its numerous advantages such as high sensitivity, minimal sample requirements, strong multi-detection ability, and controllable background interference. This paper presents a comprehensive review of the latest research on the application of SERS in the detection of breast cancer biomarkers, including exosomes, circulating tumor cells (CTCs), miRNA, proteins and others. The aim of this review is to provide valuable insights into the potential of SERS technology for early breast cancer diagnosis.
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Affiliation(s)
- Xiaobei Liu
- Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yining Jia
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, China
- Institute of Translational Medicine of Breast Disease Prevention and Treatment, Shandong University, Jinan, China
| | - Chao Zheng
- Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, China
- Institute of Translational Medicine of Breast Disease Prevention and Treatment, Shandong University, Jinan, China
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2
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Kočišová E, Kuižová A, Procházka M. Analytical applications of droplet deposition Raman spectroscopy. Analyst 2024; 149:3276-3287. [PMID: 38770583 DOI: 10.1039/d4an00336e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
The droplet deposition methods in Raman spectroscopy have received considerable attention in the field of analytical sensing focusing on effective pre-concentration of the studied analyte (coffee-ring effect or small spots). This review covers different analytical applications of drop-coating deposition Raman scattering (DCDRS) and droplet deposition surface-enhanced Raman scattering (SERS) spectroscopy. Two main advantages of droplet deposition Raman techniques are considered: the drying-induced segregation of the components from the mixtures (such as body fluids) and the sensitivity of detection of various analytically important molecules. Some recent advanced applications, including clinical cancer diagnosis, are discussed and summarized. Finally, the potential and further perspectives of the droplet deposition Raman methods for analytical studies are introduced.
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Affiliation(s)
- Eva Kočišová
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic.
| | - Alžbeta Kuižová
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic.
| | - Marek Procházka
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic.
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3
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Pang J, Yu J, Yang H, Ruan S, Ouyang D, Yang C, Deng L. Non-uniform droplet deposition on femtosecond laser patterned superhydrophobic/superhydrophilic SERS substrates for high-sensitive detection. OPTICS EXPRESS 2023; 31:19886-19896. [PMID: 37381394 DOI: 10.1364/oe.491434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/18/2023] [Indexed: 06/30/2023]
Abstract
Surface-enhanced Raman scattering (SERS) sensors combined with superhydrophobic/superhydrophilic (SH/SHL) surfaces have shown the ability to detect ultra-low concentrations. In this study, femtosecond laser fabricated hybrid SH/SHL surfaces with designed patterns are successfully applied to improve the SERS performances. The shape of SHL patterns can be regulated to determine the droplet evaporation process and deposition characteristics. The experimental results show that the uneven droplet evaporation along the edges of non-circular SHL patterns facilitates the enrichment of analyte molecules, thereby enhancing the SERS performance. The highly identifiable corners of SHL patterns are beneficial for capturing the enrichment area during Raman tests. The optimized 3-pointed star SH/SHL SERS substrate shows a detection limit concentration as low as 10-15 M by using only 5 µL R6G solutions, corresponding to an enhancement factor of 9.73 × 1011. Meanwhile, a relative standard deviation of 8.20% can be achieved at a concentration of 10-7 M. The research results suggest that the SH/SHL surfaces with designed patterns could be a practical approach in ultratrace molecular detections.
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Pang Y, Jin M. Self-Assembly of Silver Nanowire Films for Surface-Enhanced Raman Scattering Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1358. [PMID: 37110942 PMCID: PMC10146873 DOI: 10.3390/nano13081358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/31/2023] [Accepted: 04/11/2023] [Indexed: 06/19/2023]
Abstract
The development of SERS detection technology is challenged by the difficulty in obtaining SERS active substrates that are easily prepared, highly sensitive, and reliable. Many high-quality hotspot structures exist in aligned Ag nanowires (NWs) arrays. This study used a simple self-assembly method with a liquid surface to prepare a highly aligned AgNW array film to form a sensitive and reliable SERS substrate. To estimate the signal reproducibility of the AgNW substrate, the RSD of SERS intensity of 1.0 × 10-10 M Rhodamine 6G (R6G) in an aqueous solution at 1364 cm-1 was calculated to be as low as 4.7%. The detection ability of the AgNW substrate was close to the single molecule level, and even the R6G signal of 1.0 × 10-16 M R6G could be detected with a resonance enhancement factor (EF) as high as 6.12 × 1011 under 532 nm laser excitation. The EF without the resonance effect was 2.35 × 106 using 633 nm laser excitation. FDTD simulations have confirmed that the uniform distribution of hot spots inside the aligned AgNW substrate amplifies the SERS signal.
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Affiliation(s)
- Yanzhao Pang
- South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526060, China
| | - Mingliang Jin
- South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526060, China
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5
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Electrically Controlled Enrichment of Analyte for Ultrasensitive SERS-Based Plasmonic Sensors. NANOMATERIALS 2022; 12:nano12050844. [PMID: 35269329 PMCID: PMC8912275 DOI: 10.3390/nano12050844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/21/2022] [Accepted: 02/26/2022] [Indexed: 01/27/2023]
Abstract
Recently, sensors using surface-enhanced Raman scattering (SERS) detectors combined with superhydrophobic/superhydrophilic analyte concentration systems showed the ability to reach detection limits below the femto-molar level. However, a further increase in the sensitivity of these sensors is limited by the impossibility of the concentration systems to deposit the analyte on an area of less than 0.01 mm2. This article proposes a fundamentally new approach to the analyte enrichment, based on the effect of non-uniform electrostatic field on the evaporating droplet. This approach, combined with the optimized geometry of a superhydrophobic/superhydrophilic concentration system allows more than a six-fold reduction of the deposition area. Potentially, this makes it possible to improve the detection limit of the plasmonic sensors by the same factor, bringing it down to the attomolar level.
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Mahata T, Das GM, Dantham VR. Study of surface enhanced Raman scattering of IR-780 Iodide molecules using Au-Ag bimetallic nanostructures with blunt and sharp sprouts. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 249:119262. [PMID: 33341743 DOI: 10.1016/j.saa.2020.119262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/31/2020] [Accepted: 11/23/2020] [Indexed: 06/12/2023]
Abstract
Au-Ag bimetallic nanostructures with blunt and sharp sprouts are synthesized using a high yield one-step synthesis process. For the first time, these nanostructures are obtained at different growth times in the same synthesis process. The synthesized nanostructures are characterized using a field emission-scanning electron microscope, transmission electron microscope, energy dispersive X-ray analyzer, and UV-Visible spectrometer. The plasmon-active substrates are fabricated using synthesized nanostructures with ease. The Raman probe (IR-780 Iodide) molecules are dispersed on the surface of plasmon-active substrates by drop-casting 10 μl of dye solution of concentration ranging from 1 μM to 1 picomolar (pM) on the substrates. The surface enhanced Raman scattering (SERS) spectra are recorded for each concentration. The nanostructures with blunt sprouts are found useful only up to 100 pM. However, this limitation is brought down to 1 pM using nanostructures with sharp sprouts. The normal Raman scattering spectra of molecules and microcrystals are also recorded and compared with the SERS spectra of molecules. The experimental SERS enhancement factor (EF) is found around 1 × 109 for the Raman probe solution with 1 pM concentration. Finite Element Method (FEM) simulations are performed for estimating the possible single molecule SERS enhancement.
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Affiliation(s)
- Tania Mahata
- Department of Physics, Indian Institute of Technology Patna, Bihar 801103, India
| | - Gour Mohan Das
- Department of Physics, Indian Institute of Technology Patna, Bihar 801103, India
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7
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Martinez L, He L. Detection of Mycotoxins in Food Using Surface-Enhanced Raman Spectroscopy: A Review. ACS APPLIED BIO MATERIALS 2021; 4:295-310. [PMID: 35014285 DOI: 10.1021/acsabm.0c01349] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mycotoxins are toxic metabolites produced by fungi that contaminate many important crops worldwide. Humans are commonly exposed to mycotoxins through the consumption of contaminated food products. Mycotoxin contamination is unpredictable and unavoidable; it occurs at any point in the food production system under favorable conditions, and they cannot be destroyed by common heat treatments, because of their high thermal stability. Early and fast detection plays an essential role in this unique challenge to monitor the presence of these compounds in the food chain. Surface-enhanced Raman spectroscopy (SERS) is an advanced spectroscopic technique that integrates Raman spectroscopic molecular fingerprinting and enhanced sensitivity based on nanotechnology to meet the requirement of sensitivity and selectivity, but that can also be performed in a cost-effective and straightforward manner. This Review focuses on the SERS methodologies applied to date for qualitative and quantitative analysis of mycotoxins based on a variety of SERS substrates, as well as our perspectives on current limitations and future trends for applying this technique to mycotoxin analyses.
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Affiliation(s)
- Lourdes Martinez
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts United States
| | - Lili He
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts United States
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Duan J, Qiu Z, Li L, Feng L, Huang L, Xiao G. Inkjet printed silver nanoparticles on hydrophobic papers for efficient detection of thiram. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 243:118811. [PMID: 32829159 DOI: 10.1016/j.saa.2020.118811] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 07/31/2020] [Accepted: 08/05/2020] [Indexed: 05/27/2023]
Abstract
Silver nanoparticles coated paper (AgNPs-paper) substrates were prepared by inkjet printing Ag ink on four different wettability papers. Scanning electron microscope and contact angle analyzer were used to characterize their surface morphology and wettability. AgNPs-paper substrates were used to detect the surface-enhanced Raman scattering (SERS) spectra of thiram aqueous solution. Relationships between the surface wettability, surface morphology and SERS activities of the substrates were systematically studied. The silver nanoparticles deposited on the hydrophobic papers (photographic paper, graph paper, and weighing paper) were evenly and densely arranged. While in-homogeneous distribution was observed on the hydrophilic printing paper. It can be found that the AgNPs-photographic paper with the maximum contact angle exhibited the highest SERS enhancement. The detection limit for thiram adsorbed on the AgNPs-photographic paper was 10-10 mol/L, which was lower than the others. Good linear responses (R2 = 0.9918, 0.9897) between the SERS intensities and logarithmic concentrations were obtained from 104 to 10-10 mol/L. Moreover, the substrate had good uniformity and reproducibility with relative standard deviation values of 4.20% and 4.90% measured by eight points and ten substrates, respectively. The AgNPs-photographic paper exhibited high stability within eight months.
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Affiliation(s)
- Junli Duan
- Department of Physics, Shanghai Normal University, Shanghai 200234, PR China
| | - Zhiyu Qiu
- Department of Physics, Shanghai Normal University, Shanghai 200234, PR China
| | - Ling Li
- Department of Physics, Shanghai Normal University, Shanghai 200234, PR China
| | - Longxiu Feng
- Department of Physics, Shanghai Normal University, Shanghai 200234, PR China
| | - Lei Huang
- Department of Physics, Shanghai Normal University, Shanghai 200234, PR China
| | - Guina Xiao
- Department of Physics, Shanghai Normal University, Shanghai 200234, PR China.
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Lee N, Shin MH, Lee E, Cho SH, Hwang H, Cho K, Kim JK, Hahn SK. Three-Dimensional Tungsten Disulfide Raman Biosensor for Dopamine Detection. ACS APPLIED BIO MATERIALS 2020; 3:7687-7695. [DOI: 10.1021/acsabm.0c00876] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Noho Lee
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro,
Nam-gu, Pohang, Gyeongbuk 37673, Korea
| | - Myeong-Hwan Shin
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro,
Nam-gu, Pohang, Gyeongbuk 37673, Korea
| | - Eunho Lee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, Korea
| | - Seong-Hui Cho
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro,
Nam-gu, Pohang, Gyeongbuk 37673, Korea
| | - Hyeonwoong Hwang
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro,
Nam-gu, Pohang, Gyeongbuk 37673, Korea
| | - Kilwon Cho
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, Korea
| | - Jong Kyu Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro,
Nam-gu, Pohang, Gyeongbuk 37673, Korea
| | - Sei Kwang Hahn
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro,
Nam-gu, Pohang, Gyeongbuk 37673, Korea
- PHI BIOMED Co., #613, 12 Gangnam-daero 65-gil, Seocho-gu, Seoul 06612, Korea
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10
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Droplet array for open-channel high-throughput SERS biosensing. Talanta 2020; 218:121206. [PMID: 32797932 DOI: 10.1016/j.talanta.2020.121206] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/16/2020] [Accepted: 05/20/2020] [Indexed: 11/30/2022]
Abstract
Open-channel and high throughput are two important aspects of clinical diagnosis, correlation biochemical analysis, cell culture techniques and food safety. Here, we propose the mini-pillar based array for open-channel and high-throughput SERS detection of miRNA. The polydimethylsiloxane (PDMS) mini-pillars are used as a high-throughput platform, which have good anchoring and aggregation effects on microdroplets, greatly reducing the amount of analytical solution and facilitate the homogeneous sample distribution after evaporation. The deposited gold nanorods (Au NRs) on the pillars with optimized diameter served as SERS-active substrate, can greatly improve the sensitivity of SERS signal compared to other planar substrates. On the open-channel biological chip, sensitive, simultaneous, and specific detection of breast cancer marker miRNA-1246 can be performed. In this mini-pillar array SERS system, the limit of detection (LOD) is 10-12 M. The mini-pillar array shows enormous potential for open channel, high-throughput biomolecular detection, providing an opportunity for biomedical point-of-care testing (POCT) and drug screening.
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11
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Zhang D, Hao R, Zhang L, You H, Fang J. Ratiometric Sensing of Polycyclic Aromatic Hydrocarbons Using Capturing Ligand Functionalized Mesoporous Au Nanoparticles as a Surface-Enhanced Raman Scattering Substrate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11366-11373. [PMID: 32877608 DOI: 10.1021/acs.langmuir.0c02271] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The absorption behavior between plasmonic nanostructures and a target molecule plays key roles in effective surface-enhanced Raman scattering (SERS) detection. However, for analytes with low surface affinity to the metallic surface, e.g., polycyclic aromatic hydrocarbons (PAHs), it remains challenging to observe the enhanced Raman signal. In this work, we reported a ratiometric SERS strategy for sensitive PAH detection through the surface functionalization of 3D ordered mesoporous Au nanoparticles (meso-Au NPs). By employing mono-6-thio-β-cyclodextrin (HS-β-CD) as capture ligands, the hydrophobic molecules, e.g., anthracene, could be effectively absorbed on the meso-Au NP surface via a host-guest interaction. Besides, a hydrophobic slippery surface is used as a concentrator to deliver and enrich the Au/analyte droplets into a small area. Consequently, the detection limits of anthracene and naphthalene are down to 1 and 10 ppb. The improved SERS enhancement is mainly ascribed to the host-guest effect of HS-β-CD ligands, large surface area and high-density of sub-10 nm mesopores of Au networks, as well as the enrichment effect of hydrophobic slippery surface. Moreover, the HS-β-CD (480 cm-1 band) could serve as an internal standard, leading to the ratiometric determination of anthracene ranging from 1 ppm to 1 ppb. The proposed surface modification strategy in combination with the hydrophobic slippery surface shows great potential for active capture and trace detection of persistent organic pollutants in real-world SERS applications.
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Affiliation(s)
- Dongjie Zhang
- Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, Shann xi 710049, China
| | - Rui Hao
- Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, Shann xi 710049, China
| | - Lingling Zhang
- Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, Shann xi 710049, China
| | - Hongjun You
- School of Science, Xi'an Jiaotong University, Xi'an, Shann xi 710049, China
| | - Jixiang Fang
- Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an, Shann xi 710049, China
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12
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Chen L, Lin R, Chen X, Hao Z, Diao X, Froning D, Tang S. Microporous Layers with Different Decorative Patterns for Polymer Electrolyte Membrane Fuel Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:24048-24058. [PMID: 32374155 DOI: 10.1021/acsami.0c05416] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
To optimize the interface of the catalyst layer (CL) and gas diffusion layer (GDL) in polymer electrolyte membrane fuel cells (PEMFCs), microporous layers (MPLs) with different decorative patterns were prepared. Carbon paper treated with polytetrafluoroethylene was used as a substrate for the coating of MPLs. To accelerate water removal and gas permeation, ammonium chloride was utilized to improve the porous structure of MPLs. Owing to the recrystallization and pyrolysis of ammonium chloride with different contents, the surface of MPLs exhibited point-, line-, and flowerlike patterns. Membrane electrode assemblies (MEAs) were assembled to evaluate the performance of MPLs with different decorative patterns. From measurements, an MEA containing a porosity-graded MPL (MPL-G) with a flowerlike pattern exhibited the best electrochemical performance. It is because that graded porosity accelerates the removal of excessive water. The flowerlike pattern facilitates the diffusion of the reactant gas at the interface of the catalyst layer and MPL. With the measurement of segmented cell technology, such MEAs revealed an improved redispersion of reactant gases. Furthermore, the produced water was compressed to the gas outlet, providing a larger active region for reaction. These results indicate that pattern design of MPLs is a promising strategy to improve the mass-transfer efficiency at the interface of the catalyst layer and gas diffusion layer.
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Affiliation(s)
- Liang Chen
- School of Automotive Studies, Tongji University, Shanghai 201804, China
| | - Rui Lin
- School of Automotive Studies, Tongji University, Shanghai 201804, China
| | - Xiadong Chen
- School of Automotive Studies, Tongji University, Shanghai 201804, China
| | - Zhixian Hao
- School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xiaoyu Diao
- School of Automotive Studies, Tongji University, Shanghai 201804, China
| | - Dieter Froning
- Institute of Energy and Climate Research, IEK-14: Electrochemical Process Engineering, Jülich 52425, Germany
| | - Shenghao Tang
- School of Automotive Studies, Tongji University, Shanghai 201804, China
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13
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Buoyant particulate strategy for few-to-single particle-based plasmonic enhanced nanosensors. Nat Commun 2020; 11:2603. [PMID: 32451374 PMCID: PMC7248072 DOI: 10.1038/s41467-020-16329-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 04/24/2020] [Indexed: 11/08/2022] Open
Abstract
Detecting matter at a single-molecule level is the ultimate target in many branches of study. Nanosensors based on plasmonics have garnered significant interest owing to their ultrahigh sensitivity even at single-molecule level. However, currently, plasmonic-enhanced nanosensors have not achieved excellent performances in practical applications and their detection at femtomolar or attomolar concentrations remains highly challenging. Here we show a plasmonic sensing strategy, called buoyant plasmonic-particulate-based few-to-single particle-nanosensors. Large-sized floating particles combined with a slippery surface may prevent the coffee-ring effect and enhance the spatial enrichment capability of the analyte in plasmonic sensitive sites via the aggregation and lifting effect. Dimer and single particle-nanosensors demonstrate an enhanced surface-enhanced Raman spectroscopy (SERS) and a high fluorescence sensitivity with an enrichment factor up to an order of ∼104 and the limit of detection of CV molecules down to femto- or attomolar levels. The current buoyant particulate strategy can be exploited in a wide range of plasmonic enhanced sensing applications for a cost-effective, simple, fast, flexible, and portable detection. Plasmonic-enhanced nanosensors are limited in practical applications, as it remains challenging to detect molecules at low concentrations. Here, the authors introduce a buoyant particulate strategy in order to enrich analytes in the plasmonic hot spots.
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14
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Sun J, Gong L, Wang W, Gong Z, Wang D, Fan M. Surface‐enhanced Raman spectroscopy for on‐site analysis: A review of recent developments. LUMINESCENCE 2020; 35:808-820. [DOI: 10.1002/bio.3796] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 02/14/2020] [Accepted: 02/25/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Ji Sun
- Faculty of Geosciences and Environmental EngineeringSouthwest Jiaotong University Chengdu China
| | - Lin Gong
- Faculty of Geosciences and Environmental EngineeringSouthwest Jiaotong University Chengdu China
| | - Wenjun Wang
- Faculty of Geosciences and Environmental EngineeringSouthwest Jiaotong University Chengdu China
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental EngineeringSouthwest Jiaotong University Chengdu China
| | - Dongmei Wang
- Faculty of Geosciences and Environmental EngineeringSouthwest Jiaotong University Chengdu China
| | - Meikun Fan
- Faculty of Geosciences and Environmental EngineeringSouthwest Jiaotong University Chengdu China
- State‐province Joint Engineering Laboratory of Spatial Information Technology of High‐Speed Rail Safety Chengdu China
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15
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Ultrasensitive SERS-Based Plasmonic Sensor with Analyte Enrichment System Produced by Direct Laser Writing. NANOMATERIALS 2019; 10:nano10010049. [PMID: 31878209 PMCID: PMC7022550 DOI: 10.3390/nano10010049] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 12/23/2022]
Abstract
We report an easy-to-implement device for surface-enhanced Raman scattering (SERS)-based detection of various analytes dissolved in water droplets at trace concentrations. The device combines an analyte-enrichment system and SERS-active sensor site, both produced via inexpensive and high-performance direct femtosecond (fs)-laser printing. Fabricated on a surface of water-repellent polytetrafluoroethylene substrate as an arrangement of micropillars, the analyte-enrichment system supports evaporating water droplet in the Cassie-Baxter superhydrophobic state, thus ensuring delivery of the dissolved analyte molecules towards the hydrophilic SERS-active site. The efficient pre-concentration of the analyte onto the sensor site based on densely arranged spiky plasmonic nanotextures results in its subsequent label-free identification by means of SERS spectroscopy. Using the proposed device, we demonstrate reliable SERS-based fingerprinting of various analytes, including common organic dyes and medical drugs at ppb concentrations. The proposed device is believed to find applications in various areas, including label-free environmental monitoring, medical diagnostics, and forensics.
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16
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Fan M, Andrade GFS, Brolo AG. A review on recent advances in the applications of surface-enhanced Raman scattering in analytical chemistry. Anal Chim Acta 2019; 1097:1-29. [PMID: 31910948 DOI: 10.1016/j.aca.2019.11.049] [Citation(s) in RCA: 199] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 11/18/2019] [Accepted: 11/20/2019] [Indexed: 12/13/2022]
Abstract
This review is focused on recent developments of surface-enhanced Raman scattering (SERS) applications in Analytical Chemistry. The work covers advances in the fabrication methods of SERS substrates, including nanoparticles immobilization techniques and advanced nanopatterning with metallic features. Recent insights in quantitative and sampling methods for SERS implementation and the development of new SERS-based approaches for both qualitative and quantitative analysis are discussed. The advent of methods for pre-concentration and new approaches for single-molecule SERS quantification, such as the digital SERS procedure, has provided additional improvements in the analytical figures-of-merit for analysis and assays based on SERS. The use of metal nanostructures as SERS detection elements integrated in devices, such as microfluidic systems and optical fibers, provided new tools for SERS applications that expand beyond the laboratory environment, bringing new opportunities for real-time field tests and process monitoring based on SERS. Finally, selected examples of SERS applications in analytical and bioanalytical chemistry are discussed. The breadth of this work reflects the vast diversity of subjects and approaches that are inherent to the SERS field. The state of the field indicates the potential for a variety of new SERS-based methods and technologies that can be routinely applied in analytical laboratories.
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Affiliation(s)
- Meikun Fan
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China
| | - Gustavo F S Andrade
- Centro de Estudos de Materiais, Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, Campus Universitário s/n, CEP 36036-900, Juiz de Fora, Brazil
| | - Alexandre G Brolo
- Department of Chemistry, University of Victoria, PO Box 3055, Victoria, BC, V8W 3V6, Canada; Centre for Advanced Materials and Related Technology, University of Victoria, V8W 2Y2, Canada.
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Ma X, Jiang L, Li X, Li B, Huang J, Sun J, Wang Z, Xu Z, Qu L, Lu Y, Cui T. Hybrid superhydrophilic-superhydrophobic micro/nanostructures fabricated by femtosecond laser-induced forward transfer for sub-femtomolar Raman detection. MICROSYSTEMS & NANOENGINEERING 2019; 5:48. [PMID: 31645998 PMCID: PMC6799889 DOI: 10.1038/s41378-019-0090-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 05/24/2019] [Accepted: 06/27/2019] [Indexed: 05/27/2023]
Abstract
Raman spectroscopy plays a crucial role in biochemical analysis. Recently, superhydrophobic surface-enhanced Raman scattering (SERS) substrates have enhanced detection limits by concentrating target molecules into small areas. However, due to the wet transition phenomenon, further reduction of the droplet contact area is prevented, and the detection limit is restricted. This paper proposes a simple method involving femtosecond laser-induced forward transfer for preparing a hybrid superhydrophilic-superhydrophobic SERS (HS-SERS) substrate by introducing a superhydrophilic pattern to promote the target molecules to concentrate on it for ultratrace detection. Furthermore, the HS-SERS substrate is heated to promote a smaller concentrated area. The water vapor film formed by the contact of the solution with the substrate overcomes droplet collapse, and the target molecules are completely concentrated into the superhydrophilic region without loss during evaporation. Finally, the concentrated region is successfully reduced, and the detection limit is enhanced. The HS-SERS substrate achieved a final contact area of 0.013 mm2, a 12.1-fold decrease from the unheated case. The reduction of the contact area led to a detection limit concentration as low as 10-16 M for a Rhodamine 6G solution. In addition, the HS-SERS substrate accurately controlled the size of the concentrated areas through the superhydrophilic pattern, which can be attributed to the favorable repeatability of the droplet concentration results. In addition, the preparation method is flexible and has the potential for fluid mixing, fluid transport, and biochemical sensors, etc.
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Affiliation(s)
- Xiaodan Ma
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Lan Jiang
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Xiaowei Li
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Bohong Li
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Ji Huang
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Jiaxing Sun
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Zhi Wang
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Zhijie Xu
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Liangti Qu
- Department of Mechanical Engineering, Tsinghua University, 100084 Beijing, China
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Yongfeng Lu
- Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588-0511 USA
| | - Tianhong Cui
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455 USA
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18
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Byram C, Moram SSB, Soma VR. SERS based detection of multiple analytes from dye/explosive mixtures using picosecond laser fabricated gold nanoparticles and nanostructures. Analyst 2019; 144:2327-2336. [PMID: 30768076 DOI: 10.1039/c8an01276h] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Surface enhanced Raman spectroscopy (SERS) is a cutting edge analytical tool for trace analyte detection due to its highly sensitive, non-destructive and fingerprinting capability. Herein, we report the detection of multiple analytes from various mixtures using gold nanoparticles (NPs) and nanostructures (NSs) as SERS platforms. NPs and NSs were achieved through the simple approach of laser ablation in liquids (LAL) and their morphological studies were conducted with a UV-Visible absorption spectrometer, a high resolution transmission electron microscope (HRTEM) and a field emission scanning electron microscope (FESEM). The fabricated NPs/NSs allowed the sensitive and selective detection of different mixed compounds containing (i) rhodamine 6G (Rh6G) and methylene blue (MB), (ii) crystal violet (CV) and malachite green (MG), (iii) picric acid (explosive) and MB (dye), (iv) picric acid and 3-nitro-1,2,4- triazol-5-one (explosive, NTO) and (v) picric acid and 2,4-dinitrotoluene (explosive, DNT) using a portable Raman spectrometer. Thus, the obtained results demonstrate the capability of fabricated SERS substrates in identifying explosives and dyes from various mixtures. This could pave a new way for simultaneous detection of multiple analytes in real field applications.
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Affiliation(s)
- Chandu Byram
- Advanced Centre for Research in High Energy Materials (ACRHEM), University of Hyderabad, Prof. C. R. Rao Road, Hyderabad 500046, Telangana, India.
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Zhang D, You H, Yuan L, Hao R, Li T, Fang J. Hydrophobic Slippery Surface-Based Surface-Enhanced Raman Spectroscopy Platform for Ultrasensitive Detection in Food Safety Applications. Anal Chem 2019; 91:4687-4695. [DOI: 10.1021/acs.analchem.9b00085] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Dongjie Zhang
- Key Laboratory of Physical Electronics and Devices of Ministry of Education, School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Hongjun You
- School of Science, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Lei Yuan
- Shaanxi Institute for Food and Drug Control, Xi’an, Shaanxi 710065, China
| | - Rui Hao
- Key Laboratory of Physical Electronics and Devices of Ministry of Education, School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Tao Li
- Shaanxi Institute for Food and Drug Control, Xi’an, Shaanxi 710065, China
| | - Jixiang Fang
- Key Laboratory of Physical Electronics and Devices of Ministry of Education, School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
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20
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Xu T, Xu LP, Zhang X, Wang S. Bioinspired superwettable micropatterns for biosensing. Chem Soc Rev 2019; 48:3153-3165. [DOI: 10.1039/c8cs00915e] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The bioinspired micropatterns exhibit outstanding capacity in controlling and patterning microdroplets, which have offered new functionalities and possibilities towards a wide variety of emerging biological and biomedical applications.
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Affiliation(s)
- Tailin Xu
- Research Center for Bioengineering and Sensing Technology
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
| | - Li-Ping Xu
- Research Center for Bioengineering and Sensing Technology
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
- School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen
| | - Shutao Wang
- Key Laboratory of Bio-inspired Materials and Interface Science
- CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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21
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Zhizhchenko A, Kuchmizhak A, Vitrik O, Kulchin Y, Juodkazis S. On-demand concentration of an analyte on laser-printed polytetrafluoroethylene. NANOSCALE 2018; 10:21414-21424. [PMID: 30427036 DOI: 10.1039/c8nr06119j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Controllable targeted deposition of an analyte dissolved in a liquid drop evaporating on a superhydrophobic surface has recently emerged as a promising concentrator approach with various applications ranging from ultrasensitive bioidentification to DNA molecule sorting. Here, we demonstrate that surface textures with non-uniform wettability fabricated using direct easy-to-implement femtosecond-pulse filament-assisted ablation of polytetrafluoroethylene substrates can be used to concentrate and deposit an analyte at a designated location out of a water droplet. The proposed surface textures contain a central superhydrophilic trap surrounded by superhydrophobic periodically arranged pillars with a hierarchical roughness. By optimizing the arrangement and geometry of the central trap and the surrounding superhydrophobic textures, the analyte dissolved in a 5 μL water drop was fixed onto a 90 × 90 μm2 target. The proposed textures provide a concentration factor of 103, an order of magnitude higher than those for the previously reported surface textures. This promising ultrasensitive versatile platform allows the detection of fingerprints of the deposited analyte via surface-enhanced spectroscopy techniques (Raman scattering or photoluminescence) at an estimated detection threshold better than 10-15 mol L-1.
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Affiliation(s)
- Alexey Zhizhchenko
- Far Eastern Federal University, 8 Sukhanova str., Vladivostok 690041, Russia.
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22
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Chu F, Yan S, Zheng J, Zhang L, Zhang H, Yu K, Sun X, Liu A, Huang Y. A Simple Laser Ablation-Assisted Method for Fabrication of Superhydrophobic SERS Substrate on Teflon Film. NANOSCALE RESEARCH LETTERS 2018; 13:244. [PMID: 30136110 PMCID: PMC6104470 DOI: 10.1186/s11671-018-2658-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Accepted: 08/06/2018] [Indexed: 05/14/2023]
Abstract
With high sensitivity at single molecule level, surface-enhanced Raman scattering (SERS) is considered as an ultrasensitive optical detection technology with broad application prospects in lots of fields. However, the complicated fabrication and unaffordable price of SERS substrate are still a roadblock on the way to be widely used in industry. In this work, the SERS spectra on a commercial laser engraved Teflon (PTFE) film with engraved microarray are investigated. The wettability of film surface modulated by laser engraving make the microarray have the ability to decrease the contact area on film surface while water evaporation. The SEM image of the engraved area points out the micro/nanostructures generated engraving process is crucial to its superhydrophobic property. The probing molecules (i.e., methylene blue and rhodamine6G) were utilized to investigate with the limit of detection (1 × 10-14 M). Furthermore, the biomolecule (bovine serum albumin) was used to demonstrate its benefits in biological applications. The measured intensities of Raman spectra on this PTFE with laser engraved microarray demonstrate its potential value for a SERS substrate. Our work on this simple, cheap SERS substrate with high sensitivity has a great commercial value and plenty of application in lots of fields.
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Affiliation(s)
- Fangjia Chu
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 400044 China
- Department of Applied Physics, College of Physics, Chongqing University, Chongqing, 400044 China
| | - Sheng Yan
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jiangen Zheng
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 400044 China
| | - Lingjun Zhang
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 400044 China
| | - Haiyan Zhang
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 400044 China
| | - Keke Yu
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 400044 China
- Department of Applied Physics, College of Physics, Chongqing University, Chongqing, 400044 China
| | - Xiaonan Sun
- Department of Applied Physics, College of Physics, Chongqing University, Chongqing, 400044 China
| | - Anping Liu
- Department of Applied Physics, College of Physics, Chongqing University, Chongqing, 400044 China
| | - Yingzhou Huang
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 400044 China
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23
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Wang T, Zhou J, Wang Y. Simple, Low-Cost Fabrication of Highly Uniform and Reproducible SERS Substrates Composed of Ag⁻Pt Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E331. [PMID: 29762487 PMCID: PMC5977345 DOI: 10.3390/nano8050331] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/02/2018] [Accepted: 05/10/2018] [Indexed: 11/16/2022]
Abstract
Ag⁻Pt nanoparticles, grafted on Ge wafer, were synthesized by the galvanic replacement reaction based on their different potentials. Detailed characterization through scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS) and X-ray photo-elelctron spectroscopy (XPS) proved that Ag⁻Pt nanoparticles are composed of large Ag nanoparticles and many small Pt nanoparticles instead of an Ag⁻Pt alloy. When applied as surface-enhanced Raman scattering (SERS) substrates to detect Rhodamine 6G (1 × 10-8 M) or Crystal violet (1 × 10-7 M) aqueous solution in the line mapping mode, all of the obtained relative standard deviation (RSD) values of the major characteristic peak intensities, calculated from the SERS spectra of 100 serial spots, were less than 10%. The fabrication process of the SERS substrate has excellent uniformity and reproducibility and is simple, low-cost and time-saving, which will benefit studies on the platinum-catalyzed reaction mechanisms in situ and widen the practical application of SERS.
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Affiliation(s)
- Tao Wang
- Provincial Key Laboratory of Functional Coordination Compounds and Nanomaterials, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246001, China.
| | - Juhong Zhou
- Provincial Key Laboratory of Functional Coordination Compounds and Nanomaterials, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246001, China.
| | - Yan Wang
- Provincial Key Laboratory of Functional Coordination Compounds and Nanomaterials, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246001, China.
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24
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Xu T, Song Y, Gao W, Wu T, Xu LP, Zhang X, Wang S. Superwettable Electrochemical Biosensor toward Detection of Cancer Biomarkers. ACS Sens 2018; 3:72-78. [PMID: 29308651 DOI: 10.1021/acssensors.7b00868] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Bioinspired superwettable micropatterns that combine two extreme states of superhydrophobicity and superhydrophilicity with the ability to enrich and absorb microdroplets are suitable for versatile and robust sensing applications. Here we introduce a superwettable microchip that integrates superhydrophobic-superhydrophilic micropatterns and a nanodendritic electrochemical biosensor toward the detection of prostate cancer biomarkers. On the superwettable microchip, the superhydrophobic area could confine the microdroplets in superhydrophilic microwells; such behavior is extremely helpful for reducing the amount of analytical solution. In contrast, superhydrophilic microwells exhibit a high adhesive force toward microdroplets, and the nanodendritic structures can improve probe-binding capacity and response signals, thus greatly enhancing the sensitivity. Sensitive and selective detection of prostate cancer biomarkers including miRNA-375, miRNA-141, and prostate-specific antigen on a single microchip is also achieved. Such a superwettable microchip with high sensitivity, low sample volume, and upside-down detection capability in a single microdroplet shows great potential to fabricate portable devices toward complex biosensing applications.
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Affiliation(s)
- Tailin Xu
- Research
Center for Bioengineering and Sensing Technology, School of Chemistry
and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Yongchao Song
- Research
Center for Bioengineering and Sensing Technology, School of Chemistry
and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Wei Gao
- Department
of Medical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Tingting Wu
- Research
Center for Bioengineering and Sensing Technology, School of Chemistry
and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Li-Ping Xu
- Research
Center for Bioengineering and Sensing Technology, School of Chemistry
and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Xueji Zhang
- Research
Center for Bioengineering and Sensing Technology, School of Chemistry
and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Shutao Wang
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
CAS Center for Excellence in Nanoscience, Tech-nical Institute of
Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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25
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Lee SM, Kim SH, Lee JH, Lee SJ, Kim HK. Hydrophobic and stretchable Ag nanowire network electrode passivated by a sputtered PTFE layer for self-cleaning transparent thin film heaters. RSC Adv 2018; 8:18508-18518. [PMID: 35541098 PMCID: PMC9080517 DOI: 10.1039/c8ra00880a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 05/12/2018] [Indexed: 01/23/2023] Open
Abstract
We demonstrated hydrophobic, flexible/stretchable, and transparent electrodes made up of Ag nanowire (NW) networks passivated by a sputtered polytetrafluoroethylene (PTFE) layer to produce self-cleaning transparent thin film heaters (TFHs). Using carbon nanotubes and a PTFE mixed conducting target, we successfully sputtered a transparent PTFE layer on the Ag NW network using mid-frequency magnetron sputtering. The hydrophobic surface of the PTFE/Ag NW electrodes led to water-repelling and self-cleaning transparent Ag NW electrodes, which are beneficial for transparent TFH-based smart windows. Furthermore, hydrophobic PTFE/Ag NW electrodes coated on polyethylene terephthalate (PET) and polyurethane (PU) substrates showed outstanding flexibility and stretchability, respectively, due to the capping effect of the PTFE layer. Based on outer/inner bending and stretching test results, we demonstrated the superior mechanical properties of the PTFE/Ag NW electrode compared to a bare Ag NW electrode. Finally, we investigated the feasibility of the PTFE/Ag NW film coated on a PU substrate as a transparent and stretchable electrode for stretchable and self-cleaning transparent TFHs. The effective heat generation of the stretchable PTFE/Ag NW electrode indicates the potential for energy-efficient multi-functional PTFE/Ag NW-based TFHs attached to automobile windows. We demonstrated hydrophobic, flexible/stretchable, and transparent electrodes made up of Ag nanowire networks passivated by a sputtered polytetrafluoroethylene layer to produce self-cleaning transparent film heaters.![]()
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Affiliation(s)
- Sang-Mok Lee
- Kyung Hee University
- Department of Advanced Materials Engineering for Information and Electronics
- Yongin-si
- Republic of Korea
| | - Sung Hyun Kim
- Chemical Materials Solutions Center
- Korea Research Institute of Chemical Technology
- Daejeon
- Republic of Korea
| | - Jae Heung Lee
- Chemical Materials Solutions Center
- Korea Research Institute of Chemical Technology
- Daejeon
- Republic of Korea
| | - Sang-Jin Lee
- Chemical Materials Solutions Center
- Korea Research Institute of Chemical Technology
- Daejeon
- Republic of Korea
| | - Han-Ki Kim
- School of Advanced Materials Science & Engineering
- Sungkyunkwan University
- Suwon
- Republic of Korea
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26
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Jie Z, Xinyu W, Pengyue Z, Jiamin Q, Yong Z. Surface-enhanced Raman scattering activities of graphene-wrapped Cu particles by chemical vapor deposition assisted with thermal annealing. OPTICS EXPRESS 2016; 24:24551-24566. [PMID: 27828182 DOI: 10.1364/oe.24.024551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We presented a graphene-wrapped Cu particle hybrid system (G@Cu) to be used as a high performance surface-enhanced Raman scattering (SERS) substrate. The Cu particles wrapped by a few-layer graphene shell were directly synthesized on SiO2/Si by chemical vapor deposition assisted with thermal annealing in a mixture of methane and hydrogen. The detailed explanation on the different morphology of Cu particles induced by different thermal annealing condition was carried out with both qualitative and quantitative analysis and a series of G@Cu 3D models of Cu particles with different shape anisotropy and inter-particle gap were also built for further study of Raman enhancement mechanism. The G@Cu showed fine SERS activities, including the fluorescence quenching effect, the stability of Raman signals, chemical and optical stability, with an enhancement factor (EF) of ~1.5 × 106.
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27
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Li L, Liu J, Yang X, Huang J, He D, Guo X, Wan L, He X, Wang K. Biomimetic synthesis of highly biocompatible gold nanoparticles with amino acid-dithiocarbamate as a precursor for SERS imaging. NANOTECHNOLOGY 2016; 27:105603. [PMID: 26867113 DOI: 10.1088/0957-4484/27/10/105603] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Amino acid-dithiocarbamate (amino acid-DTC) was developed as both the reductant and ligand stabilizer for biomimetic synthesis of gold nanoparticles (AuNPs), which served as an excellent surface-enhanced Raman scattering (SERS) contrast nanoprobe for cell imaging. Glycine (Gly), glutamic acid (Glu), and histidine (His) with different isoelectric points were chosen as representative amino acid candidates to synthesize corresponding amino acid-DTC compounds through mixing with carbon disulfide (CS2), respectively. The pyrogenic decomposition of amino acid-DTC initiated the reduction synthesis of AuNPs, and the strong coordinating dithiocarbamate group of amino acid-DTC served as a stabilizer that grafted onto the surface of the AuNPs, which rendered the as-prepared nanoparticles a negative surface charge and high colloidal stability. MTT cell viability assay demonstrated that the biomimetic AuNPs possessed neglectful toxicity to the human hepatoma cell, which guaranteed them good biocompatibility for biomedical application. Meanwhile, the biomimetic AuNPs showed a strong SERS effect with an enhancement factor of 9.8 × 10(5) for the sensing of Rhodamine 6G, and two distinct Raman peaks located at 1363 and 1509 cm(-1) could be clearly observed in the cell-imaging experiments. Therefore, biomimetic AuNPs can be explored as an excellent SERS contrast nanoprobe for biomedical imaging, and the amino acid-DTC mediated synthesis of the AuNPs has a great potential in bio-engineering and biomedical imaging applications.
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Affiliation(s)
- Li Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, People's Republic of China
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28
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Shen Y, Liu Y, Wang W, Xu F, Yan C, Zhang J, Wang J, Yuan A. Au nanocluster arrays on self-assembled block copolymer thin films as highly active SERS substrates with excellent reproducibility. RSC Adv 2016. [DOI: 10.1039/c6ra05225h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
We demonstrate the fabrication of uniform Au nanocluster arrays utilizing a self-assembled polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) thin film as the template and their application as a surface-enhanced Raman scattering (SERS) substrate.
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Affiliation(s)
- Yale Shen
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Yuanjun Liu
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Wei Wang
- School of Material Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Fan Xu
- School of Material Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Chao Yan
- School of Material Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Junhao Zhang
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Jing Wang
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
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29
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Chou SY, Yu CC, Yen YT, Lin KT, Chen HL, Su WF. Romantic Story or Raman Scattering? Rose Petals as Ecofriendly, Low-Cost Substrates for Ultrasensitive Surface-Enhanced Raman Scattering. Anal Chem 2015; 87:6017-24. [DOI: 10.1021/acs.analchem.5b00551] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Sin-Yi Chou
- Department of Materials Science
and Engineering, National Taiwan University, Number 1, Section 4, Roosevelt Road, Taipei, 10617 Taiwan (R.O.C.)
| | - Chen-Chieh Yu
- Department of Materials Science
and Engineering, National Taiwan University, Number 1, Section 4, Roosevelt Road, Taipei, 10617 Taiwan (R.O.C.)
| | - Yu-Ting Yen
- Department of Materials Science
and Engineering, National Taiwan University, Number 1, Section 4, Roosevelt Road, Taipei, 10617 Taiwan (R.O.C.)
| | - Keng-Te Lin
- Department of Materials Science
and Engineering, National Taiwan University, Number 1, Section 4, Roosevelt Road, Taipei, 10617 Taiwan (R.O.C.)
| | - Hsuen-Li Chen
- Department of Materials Science
and Engineering, National Taiwan University, Number 1, Section 4, Roosevelt Road, Taipei, 10617 Taiwan (R.O.C.)
| | - Wei-Fang Su
- Department of Materials Science
and Engineering, National Taiwan University, Number 1, Section 4, Roosevelt Road, Taipei, 10617 Taiwan (R.O.C.)
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30
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Zhou J, Zhu F, Wang Y, Wang T. One-step green synthesis of high uniform SERS substrate based on Au nanoparticles grown on Ge wafer. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.03.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Sun Y, Han Z, Liu H, He S, Yang L, Liu J. Three-dimensional hotspots in evaporating nanoparticle sols for ultrahigh Raman scattering: solid-liquid interface effects. NANOSCALE 2015; 7:6619-6626. [PMID: 25794035 DOI: 10.1039/c5nr00359h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Three-dimensional (3D) hotspots for ultrahigh surface-enhanced Raman scattering (SERS) has been experimentally demonstrated by evaporating a droplet of citrate-Ag sols on both hydrophobic and hydrophilic flat surfaces. Interestingly, the hydrophobic surface increased the Raman enhancement by two orders of magnitude and exhibits a better signal stability than the hydrophilic one. This study highlights the differences between hydrophilic and hydrophobic surfaces in enhanced Raman scattering by the use of extremely diluted rhodamine 6G (R6G) as the SERS reporter. In situ synchrotron-radiation small-angle X-ray scattering (SR-SAXS) was employed to explore the evolution of the 3D geometry of Ag nanoparticles in a single droplet and verify the influence mechanism of these two kinds of surface. The ideal situation of 3D self-assembly of nanoparticles in the evaporation process is a collaborative behaviour, but our results evidenced that a progressive 3D self-assembly of nanoparticles was more preferred due to the interface effects. Our experimental data derived from in situ SR-SAXS reveals that a truly distinct 3D geometry of the Ag particles develops during the evaporation process on both hydrophilic and hydrophobic surfaces. In this type of 3D geometry, the increased uniformity of the interparticle distance induced a sharp peak of the SR-SAXS signal, differing significantly from the dry state. In particular, the fluorosilylated surface reduces the interaction with particles and decreases the electrostatic adsorption on the flat surface, which helps to control the interparticle distance to remain within a small range, produce a larger number of hotspots in 3D space, and amplify the SERS enhancement accordingly.
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Affiliation(s)
- Yudie Sun
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China.
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32
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Shao J, Tong L, Tang S, Guo Z, Zhang H, Li P, Wang H, Du C, Yu XF. PLLA nanofibrous paper-based plasmonic substrate with tailored hydrophilicity for focusing SERS detection. ACS APPLIED MATERIALS & INTERFACES 2015; 7:5391-5399. [PMID: 25697378 DOI: 10.1021/am508881k] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report a new paper-based surface enhanced Raman scattering (SERS) substrate platform contributed by a poly(l-lactic acid) (PLLA) nanofibrous paper adsorbed with plasmonic nanostructures, which can circumvent many challenges of the existing SERS substrates. This PLLA nanofibrous paper has three-dimensional porous structure, extremely clean surface with good hydrophobicity (contact angle is as high as 133.4°), and negligible background interference under Raman laser excitation. Due to the strong electrostatic interaction between PLLA nanofiber and cetyltrimethylammonium bromide (CTAB) molecules, the CTAB-coated gold nanorods (GNRs) are efficiently immobilized onto the fibers. Such a hydrophobic paper substrate with locally hydrophilic SERS-active area can confine analyte molecules and prevent the random spreading of molecules. The confinement leads to focusing effect and the GNRs-PLLA SERS substrate is found to be highly sensitive (0.1 nM Rhodamine 6G and malachite green) and exhibit excellent reproducibility (∼8% relative standard deviation (RSD)) and long-term stability. Furthermore, it is also cost-efficient, with simple fabrication methodology, and demonstrates high sample collection efficiency. All of these benefits ensure that this GNRs-PLLA substrate is a really perfect choice for a variety of SERS applications.
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Affiliation(s)
- Jundong Shao
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science and Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University , Shenzhen 518060, P.R. China
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33
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Yang Q, Deng M, Li H, Li M, Zhang C, Shen W, Li Y, Guo D, Song Y. Highly reproducible SERS arrays directly written by inkjet printing. NANOSCALE 2015; 7:421-5. [PMID: 25308163 DOI: 10.1039/c4nr04656k] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
SERS arrays with uniform gold nanoparticle distribution were fabricated by direct-writing with an inkjet printing method. Quantitative analysis based on Raman detection was achieved with a small standard statistical deviation of less than 4% for the reproducibility and less than 5% for the long-term stability for 12 weeks.
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Affiliation(s)
- Qiang Yang
- Key Laboratory of Green Printing, Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
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34
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Wang H, Fang J, Xu J, Wang F, Sun B, He S, Sun G, Liu H. A hanging plasmonic droplet: three-dimensional SERS hotspots for a highly sensitive multiplex detection of amino acids. Analyst 2015; 140:2973-8. [PMID: 25799000 DOI: 10.1039/c5an00232j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
3D hotspots in a hanging plasmonic droplet result in an ultrahigh Raman Scattering for the ultratrace and multiplex identification of amino acids.
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Affiliation(s)
- Hongyan Wang
- Department of Oncology
- The First Affiliated Hospital of Anhui Medical University
- Hefei 230022
- P.R. China
| | - Jinmei Fang
- Department of Oncology
- The First Affiliated Hospital of Anhui Medical University
- Hefei 230022
- P.R. China
| | - Jifei Xu
- Department of Oncology
- The First Affiliated Hospital of Anhui Medical University
- Hefei 230022
- P.R. China
| | - Fan Wang
- Department of Oncology
- The First Affiliated Hospital of Anhui Medical University
- Hefei 230022
- P.R. China
| | - Bai Sun
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei 230031
- P.R. China
| | - Shengnan He
- No. 38 Research Institute of China Electronics
- Technology Group Corporation
- Hefei 230088
- P.R. China
| | - Guoping Sun
- Department of Oncology
- The First Affiliated Hospital of Anhui Medical University
- Hefei 230022
- P.R. China
| | - Honglin Liu
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei 230031
- P.R. China
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35
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Fan M, Cheng F, Wang C, Gong Z, Tang C, Man C, Brolo AG. SERS optrode as a “fishing rod” to direct pre-concentrate analytes from superhydrophobic surfaces. Chem Commun (Camb) 2015; 51:1965-8. [DOI: 10.1039/c4cc07928k] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
SERS optrodes were used to “fish” aqueous drops from superhydrophobic surfaces, which led to an improvement of 2–3 orders of magnitude in sensitivity. 20 pg of the pesticide triazophos was detected by this method.
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Affiliation(s)
- Meikun Fan
- Faculty of Geosciences and Environmental Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Fansheng Cheng
- Chengdu Green Energy and Green Manufacturing R&D Centre
- Chengdu
- China
| | - Cong Wang
- Chengdu Green Energy and Green Manufacturing R&D Centre
- Chengdu
- China
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Changyu Tang
- Chengdu Green Energy and Green Manufacturing R&D Centre
- Chengdu
- China
| | - Changzhen Man
- Chengdu Green Energy and Green Manufacturing R&D Centre
- Chengdu
- China
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36
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Li X, Lee HK, Phang IY, Lee CK, Ling XY. Superhydrophobic-oleophobic Ag nanowire platform: an analyte-concentrating and quantitative aqueous and organic toxin surface-enhanced Raman scattering sensor. Anal Chem 2014; 86:10437-44. [PMID: 25230236 DOI: 10.1021/ac502955w] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The ultratrace detection and quantification of toxins in both water and organic liquids remains a challenge due to the random spreading and dilution of liquids on substrate-based sensors, especially for organic liquids with low surface tension. Herein, we fabricate a superhydrophobic-oleophobic (SHP-OP) 3D Ag nanowire mesh-like surface-enhanced Raman scattering (SERS) platform to overcome the random spreading issue, demonstrating ultratrace toxin sensing in both water and organic liquid. Our SHP-OP SERS platform is able to concentrate analyte solutions in water and toluene to 100-fold and 8-fold smaller areas, respectively, as compared to its omniphilic counterparts. The synergy of analyte-concentrating ability and intense SERS-enhancing properties on our SHP-OP SERS platform enables quantitative and ultratrace detection of melamine and Sudan I down to 0.1 fmol in water and toluene, respectively, using just 1 μL of analyte solution. These detection limits are 10(3)-fold lower than the regulatory limits, clearly indicating our SHP-OP SERS platform as an appealing universal ultratrace toxin sensor. The ultratrace detection of spiked melamine in liquid milk down to 100 fmol also highlights the suitability of our SHP-OP SERS platform for the sensing of food toxins in real samples.
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Affiliation(s)
- Xing Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , 50 Nanyang Avenue, Singapore 637371
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37
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Lee HK, Lee YH, Phang IY, Wei J, Miao YE, Liu T, Ling XY. Plasmonic Liquid Marbles: A Miniature Substrate-less SERS Platform for Quantitative and Multiplex Ultratrace Molecular Detection. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201401026] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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38
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Lee HK, Lee YH, Phang IY, Wei J, Miao YE, Liu T, Ling XY. Plasmonic liquid marbles: a miniature substrate-less SERS platform for quantitative and multiplex ultratrace molecular detection. Angew Chem Int Ed Engl 2014; 53:5054-8. [PMID: 24692329 DOI: 10.1002/anie.201401026] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Indexed: 11/06/2022]
Abstract
Inspired by aphids, liquid marbles have been studied extensively and have found application as isolated microreactors, as micropumps, and in sensing. However, current liquid-marble-based sensing methodologies are limited to qualitative colorimetry-based detection. Herein we describe the fabrication of a plasmonic liquid marble as a substrate-less analytical platform which, when coupled with ultrasensitive SERS, enables simultaneous multiplex quantification and the identification of ultratrace analytes across separate phases. Our plasmonic liquid marble demonstrates excellent mechanical stability and is suitable for the quantitative examination of ultratrace analytes, with detection limits as low as 0.3 fmol, which corresponds to an analytical enhancement factor of 5×10(8). The results of our simultaneous detection scheme based on plasmonic liquid marbles and an aqueous-solid-organic interface quantitatively tally with those found for the individual detection of methylene blue and coumarin.
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Affiliation(s)
- Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 50 Nanyang Ave, Singapore 637371 (Singapore)
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39
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Liu H, Yang Z, Meng L, Sun Y, Wang J, Yang L, Liu J, Tian Z. Three-Dimensional and Time-Ordered Surface-Enhanced Raman Scattering Hotspot Matrix. J Am Chem Soc 2014; 136:5332-41. [DOI: 10.1021/ja501951v] [Citation(s) in RCA: 261] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Honglin Liu
- Institute
of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
| | - Zhilin Yang
- State
Key Laboratory of Physical Chemistry of Solid Surfaces and College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Lingyan Meng
- State
Key Laboratory of Physical Chemistry of Solid Surfaces and College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yudie Sun
- Institute
of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
| | - Jie Wang
- Shanghai
Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Liangbao Yang
- Institute
of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
| | - Jinhuai Liu
- Institute
of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
| | - Zhongqun Tian
- State
Key Laboratory of Physical Chemistry of Solid Surfaces and College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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40
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Abbas RR, Richardson TH, Hobson A, Hassan A, Abbas TR. Effect of annealing on the surface plasmon resonance of dodecanethiol encapsulated gold nanoparticles Langmuir–Schafer thin films. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2013.12.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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The effect of dielectric constants on noble metal/semiconductor SERS enhancement: FDTD simulation and experiment validation of Ag/Ge and Ag/Si substrates. Sci Rep 2014; 4:4052. [PMID: 24514430 PMCID: PMC3920278 DOI: 10.1038/srep04052] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Accepted: 01/20/2014] [Indexed: 12/17/2022] Open
Abstract
The finite-difference time-domain (FDTD) method was employed to simulate the electric field distribution for noble metal (Au or Ag)/semiconductor (Ge or Si) substrates. The simulation showed that noble metal/Ge had stronger SERS enhancement than noble metal/Si, which was mainly attributed to the different dielectric constants of semiconductors. In order to verify the simulation, Ag nanoparticles with the diameter of ca. 40 nm were grown on Ge or Si wafer (Ag/Ge or Ag/Si) and employed as surface-enhanced Raman scattering substrates to detect analytes in solution. The experiment demonstrated that both the two substrates exhibited excellent performance in the low concentration detection of Rhodamine 6G. Besides, the enhancement factor (1.3 × 109) and relative standard deviation values (less than 11%) of Ag/Ge substrate were both better than those of Ag/Si (2.9 × 107 and less than 15%, respectively), which was consistent with the FDTD simulation. Moreover, Ag nanoparticles were grown in-situ on Ge substrate, which kept the nanoparticles from aggregation in the detection. To data, Ag/Ge substrates showed the best performance for their sensitivity and uniformity among the noble metal/semiconductor ones.
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42
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Raza A, Saha B. In situ silver nanoparticles synthesis in agarose film supported on filter paper and its application as highly efficient SERS test stripes. Forensic Sci Int 2014; 237:e42-6. [PMID: 24582080 DOI: 10.1016/j.forsciint.2014.01.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Revised: 01/23/2014] [Accepted: 01/27/2014] [Indexed: 01/05/2023]
Abstract
Highly efficient multifunctional agarose SERS test stripes has been fabricated by a convenient facile approach. SERS stripes were found to be highly sensitive, robust, and capable to alleviate the two major drawbacks of filter paper based SERS substrate i.e. the weak adhesion of plasmonic nanoparticles and the diffusion of analyte into the paper surface. The fabricated stripes have been used successfully for the ultra-trace detection of analytes of forensic interest including a dye, pesticide and explosive.
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Affiliation(s)
- Ali Raza
- Department of Chemistry, University of Delhi, Delhi, Delhi 110007, India
| | - Basudeb Saha
- Department of Chemistry, University of Delhi, Delhi, Delhi 110007, India; Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47906, USA.
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43
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Singh DK, Ganbold EO, Cho EM, Cho KH, Kim D, Choo J, Kim S, Lee CM, Yang SI, Joo SW. Detection of the mycotoxin citrinin using silver substrates and Raman spectroscopy. JOURNAL OF HAZARDOUS MATERIALS 2014; 265:89-95. [PMID: 24333945 DOI: 10.1016/j.jhazmat.2013.11.041] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Revised: 10/20/2013] [Accepted: 11/19/2013] [Indexed: 06/03/2023]
Abstract
We detected a trace amount of the mycotoxin citrinin using surface-enhanced Raman scattering (SERS) on silver nanoparticle (Ag NP) surfaces. The SERS substrate on hydrophobic Teflon films was also introduced to observe the citrinin peaks. A broad band at ∼1382cm(-1), which was ascribed to the symmetric carboxylate stretching mode, was observed in addition to an antisymmetric carboxylate stretching mode at ∼1568cm(-1) in the Raman spectra. The spectral feature indicated that citrinin would adsorb on Ag NPs via its carboxylate form. Based on density functional theory (DFT) calculations, vibrational mode analysis was performed to compare the Raman spectra of citrinin. DFT calculations also predicted that a bidentate bridge configuration through O15 and O16 atoms in citrinin would be the most stable on three Ag atoms. After treating with Ag NPs, observation of citrinin peaks was attempted in fungal cells of Penicillium citrinum. This work may provide useful insights into the direct observation of the hazardous citrinin mycotoxin using SERS by understanding its adsorption behaviors on Ag surfaces.
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Affiliation(s)
- Dheeraj K Singh
- Department of Chemistry, Soongsil University, Seoul 156-743, South Korea
| | | | - Eun-Min Cho
- College of Environment and Applied Chemistry, Kyung Hee University, Yongin 446-701, South Korea
| | - Kwang-Hwi Cho
- School of Systems Biomedical Science, Soongsil University, Sangdo-dong, Dongjak-gu, Seoul, South Korea
| | - Doseok Kim
- Department of Physics, Sogang University, Seoul 121-742, South Korea
| | - Jaebum Choo
- Department of Bionano Engineering, Hanyang University, Sa-1-dong 1271, Ansan 426-791, South Korea
| | - Sehun Kim
- Molecular-level Interface Research Center and Department of Chemistry, KAIST, Daejeon 305-701, South Korea
| | - Cheol Min Lee
- Institute of Environmental and Industrial Medicine, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, South Korea.
| | - Sung Ik Yang
- College of Environment and Applied Chemistry, Kyung Hee University, Yongin 446-701, South Korea.
| | - Sang-Woo Joo
- Department of Chemistry, Soongsil University, Seoul 156-743, South Korea.
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44
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Ou KL, Hsu TC, Liu YC, Yang KH, Tsai HY. Silver overlayer-modified surface-enhanced Raman scattering-active gold substrates for potential applications in trace detection of biochemical species. Anal Chim Acta 2014; 806:188-96. [DOI: 10.1016/j.aca.2013.11.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/07/2013] [Accepted: 11/14/2013] [Indexed: 11/24/2022]
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45
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Rui Tan JM, Ruan JJ, Lee HK, Phang IY, Ling XY. A large-scale superhydrophobic surface-enhanced Raman scattering (SERS) platform fabricated via capillary force lithography and assembly of Ag nanocubes for ultratrace molecular sensing. Phys Chem Chem Phys 2014; 16:26983-90. [DOI: 10.1039/c4cp03679d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A high-throughput fabrication of a stable and uniform superhydrophobic SERS platform is demonstrated. It is able to detect trace molecules at ultra-low detection limit of 10−17 M (10 aM) using just 4 μL of analyte solutions.
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Affiliation(s)
- Joel Ming Rui Tan
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- , Singapore 637371
- Interdisciplinary Graduate School
| | - Justina Jiexin Ruan
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- , Singapore 637371
| | - Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- , Singapore 637371
- Institute of Materials Research and Engineering
| | - In Yee Phang
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science
- Technology and Research)
- , Singapore 117602
| | - Xing Yi Ling
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- , Singapore 637371
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46
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SERS-Active Ag Decorated Polymer Nanorod Substrate Fabricated by the Combination of Photochemical Reduction and Nanoimprint Technology. ACTA ACUST UNITED AC 2014. [DOI: 10.4028/www.scientific.net/amr.886.101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrated a cost-effective and simple method of fabricating Ag-decorated polymer nanorod (ADPN) array by the combination of fabricated by the combination of photochemical reduction and nanoimprint technology. Here, nanoimprint lithography is utilized to fabricate polymer nanorod array as the periodic temple. Subsequently, ADPNs array can be achieved via UV irradiating. The as-synthesized ADPNs array exhibited a remarkable SERS activity and Raman signal reproducibility to rhodamine 6G, a concentration down to 1011 M can be identified. Our results revealed that the ADPN array is a highly desirable candidate as the reliable enhancer for high performance SERS analysis.
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47
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Zhang QX, Chen YX, Guo Z, Liu HL, Wang DP, Huang XJ. Bioinspired multifunctional hetero-hierarchical micro/nanostructure tetragonal array with self-cleaning, anticorrosion, and concentrators for the SERS detection. ACS APPLIED MATERIALS & INTERFACES 2013; 5:10633-10642. [PMID: 24080041 DOI: 10.1021/am403534z] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Heterohierarchical micro/nanostructure tetragonal array consisted of engineering materials of microprotrusion-like Cu and secondary nanostructured dendrite Ag have been fabricated via a primary cell-induced deposition and a facile galvanic displacement reaction combined with photolithography technique on Cu foil. Confined by the circle microwell tetragonal array of the photoresist template, regular microprotrusion-like Cu with the tunable size of diameter can be easily deposited on the surface of Cu foil. Then, the secondary dendritic Ag nanostructures in situ grow on the surface of microprotrusion via a galvanic displacement reaction, leading to the formation of heterohierarchical micro/nanostructure tetragonal array, which is similar to the surface microstructure of the lotus leaf. Inspired by this novel surface structure of imitating lotus leaf, its wettability has been systematically investigated. The results indicate that the fabricated heterohierarchical micro/nanostructure regular array after the surface fluoration presents a remarkable superhydrophobic performance. Initiated from its superhydrophobicity, an excellent self-cleaning property has also been demonstrated. In addition, the durability of the superhydrophobic surfaces is examined in the wide pH range of corrosive liquids. Notably, the fabricated superhydrophobic surface can be potentially used as concentrators, which presents a great perspective in the field of analysis through employing the SERS detection as an example.
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Affiliation(s)
- Qiao-Xin Zhang
- School of Mechanical and Electronic Engineering, Wuhan University of Technology , 122 Luoshi Road, Wuhan, 430070, P. R. China
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48
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Lee HK, Lee YH, Zhang Q, Phang IY, Tan JMR, Cui Y, Ling XY. Superhydrophobic surface-enhanced Raman scattering platform fabricated by assembly of Ag nanocubes for trace molecular sensing. ACS APPLIED MATERIALS & INTERFACES 2013; 5:11409-11418. [PMID: 24134617 DOI: 10.1021/am403655g] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
An analytical platform suitable for trace detection using a small volume of analyte is pertinent to the field of toxin detection and criminology. Plasmonic nanostructures provide surface-enhanced Raman scattering (SERS) that can potentially achieve trace toxins and/or molecules detection. However, the detection of highly diluted, small volume samples remains a challenge. Here, we fabricate a superhydrophobic SERS platform by assembling Ag nanocubes that support strong surface plasmon and chemical functionalization for trace detection with sample volume of just 1 μL. Our strategy integrates the intense electromagnetic field confinement generated by Ag nanocubes with a superhydrophobic surface capable of analyte concentration to lower the molecular detection limit. Single crystalline Ag nanocubes are assembled using the Langmuir-Blodgett technique to create surface roughness. To create a stable superhydrophobic SERS platform, an additional 25 nm Ag coating is evaporated over the Ag nanocubes to "weld" the Ag nanocubes onto the substrate followed by chemical functionalization with perfluorodecanethiol. The resulting substrate has an advancing contact angle of 169° ± 5°. Our superhydrophobic platform confines analyte molecules within a small area and prevents the random spreading of molecules. An analyte concentrating factor of 14-fold is attained, as compared to a hydrophilic surface. Consequently, the detection limit of our superhydrophobic SERS substrate reaches 10(-16) M (100 aM) for rhodamine 6G using 1 μL analyte solutions. An analytical SERS enhancement factor of 10(11) is achieved. Our protocol is a general method that provides a simple, cost-effective approach to develop a stable and uniform superhydrophobic SERS platform for trace molecular sensing.
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Affiliation(s)
- Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371
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49
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Shi Z, Wang T, Lin H, Wang X, Ding J, Shao M. Excellent surface-enhanced Raman scattering (SERS) based on AgFeO2 semiconductor nanoparticles. NANOSCALE 2013; 5:10029-33. [PMID: 24056983 DOI: 10.1039/c3nr03460g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A simple hydrothermal method was employed to synthesize AgFeO2 nanoparticles, which were utilized as substrates in SERS detection of Rhodamine 6G and 4-mercaptobenzoic acid. The magnetic properties of the products provided the capability of concentrating analyte molecules under an external magnetic field. The detection in aqueous solution has ensured the uniformity of the SERS signals and the reproducibility of the substrates. It was interesting that the substrates exhibited high SERS activity at Rhodamine 6G concentration of 1 × 10(-7) M with an enhancement factor of 5.1 × 10(5), showing the highest SERS effect for semiconductor substrates, which might be ascribed to the orderly orientation of AgFeO2 nanoparticles under external magnetic field.
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Affiliation(s)
- Zhijie Shi
- Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China.
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Nagashree KL, Lavanya R, Kavitha C, Narayanan NSV, Sampath S. Spontaneous formation of branched nanochains from room temperature molten amides: visible and near-IR active, SERS substrates for non-fluorescent and fluorescent analytes. RSC Adv 2013. [DOI: 10.1039/c3ra23378b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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