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Poonia M, Morder CJ, Schorr HC, Schultz ZD. Raman and Surface-Enhanced Raman Scattering Detection in Flowing Solutions for Complex Mixture Analysis. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2024; 17:411-432. [PMID: 38382105 PMCID: PMC11254575 DOI: 10.1146/annurev-anchem-061522-035207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Raman scattering provides a chemical-specific and label-free method for identifying and quantifying molecules in flowing solutions. This review provides a comprehensive examination of the application of Raman spectroscopy and surface-enhanced Raman scattering (SERS) to flowing liquid samples. We summarize developments in online and at-line detection using Raman and SERS analysis, including the design of microfluidic devices, the development of unique SERS substrates, novel sampling interfaces, and coupling these approaches to fluid-based chemical separations (e.g., chromatography and electrophoresis). The article highlights the challenges and limitations associated with these techniques and provides examples of their applications in a variety of fields, including chemistry, biology, and environmental science. Overall, this review demonstrates the utility of Raman and SERS for analysis of complex mixtures and highlights the potential for further development and optimization of these techniques.
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Affiliation(s)
- Monika Poonia
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA;
| | - Courtney J Morder
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA;
| | - Hannah C Schorr
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA;
| | - Zachary D Schultz
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, USA;
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2
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Juneja S, Zhang B, Wang AX. Limit-Defying μ-Total Analysis System: Achieving Part-Per-Quadrillion Sensitivity on a Hierarchical Optofluidic SERS Sensor. ACS OMEGA 2023; 8:17151-17158. [PMID: 37214736 PMCID: PMC10193394 DOI: 10.1021/acsomega.3c01519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 04/19/2023] [Indexed: 05/24/2023]
Abstract
Optofluidic sensors have accelerated the growth of smart sensor platforms with improved sensitivity, reliability, and innovation. In this article, we report the integration of a surface-enhanced Raman scattering (SERS) material consisting of silver nanoparticle-decorated diatomaceous earth (AgNPs-DE) with a flow-through microfluidic device, building up a hierarchical structured micro-total analysis system (μ-TAS) capable of achieving part-per-quadrillion (ppq)-level sensitivity. By the synergic integration of millimeter-scale microfluidic devices and porous laboratory filter paper with a micrometer-sized crosslinked cellulosic network that carries SERS-active AgNPs-DE, which possesses submicron to nanometer regimes of photonic crystals and plasmonic nanostructures, we achieved enhanced mass-transfer efficiency and unprecedented detection sensitivity. In our experiment, fentanyl as the testing analyte at different concentrations was measured using a portable Raman spectrometer. The limit of detection (LOD) was estimated to be 10 ppq from a small detection volume of 10 mL with an ultrafast time of sensing (TOS) of 3 min. To attain comparable signals, the traditional soaking method took more than 90 min to detect 10 part-per-trillion fentanyl from a 10 mL sample. Compared with existing SERS sensing results of fentanyl, the limit-defying μ-TAS reduced the LOD-TOS product by almost 4 orders of magnitude, which represents a new stage of ultrafast sensing of extremely low concentration analytes.
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Affiliation(s)
- Subhavna Juneja
- School
of Electrical Engineering and Computer Science, Oregon State University, Corvallis, Oregon 97331, United States
- Department
of Electrical and Computer Engineering, Baylor University, Waco, Texas 76798, United States
| | - Boxin Zhang
- School
of Electrical Engineering and Computer Science, Oregon State University, Corvallis, Oregon 97331, United States
| | - Alan X. Wang
- School
of Electrical Engineering and Computer Science, Oregon State University, Corvallis, Oregon 97331, United States
- Department
of Electrical and Computer Engineering, Baylor University, Waco, Texas 76798, United States
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3
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Kodithuwakku P, Jayasundara D, Munaweera I, Jayasinghe R, Thoradeniya T, Weerasekera M, Ajayan PM, Kottegoda N. A Review on Recent Developments in Structural Modification of TiO2 For Food Packaging Applications. PROG SOLID STATE CH 2022. [DOI: 10.1016/j.progsolidstchem.2022.100369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Cai Q, Castagnola V, Boselli L, Moura A, Lopez H, Zhang W, de Araújo JM, Dawson KA. A microfluidic approach for synthesis and kinetic profiling of branched gold nanostructures. NANOSCALE HORIZONS 2022; 7:288-298. [PMID: 35119063 DOI: 10.1039/d1nh00540e] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Automatized approaches for nanoparticle synthesis and characterization represent a great asset to their applicability in the biomedical field by improving reproducibility and standardization, which help to meet the selection criteria of regulatory authorities. The scaled-up production of nanoparticles with carefully defined characteristics, including intrinsic morphological features, and minimal intra-batch, batch-to-batch, and operator variability, is an urgent requirement to elevate nanotechnology towards more trustable biological and technological applications. In this work, microfluidic approaches were employed to achieve fast mixing and good reproducibility in synthesizing a variety of gold nanostructures. The microfluidic setup allowed exploiting spatial resolution to investigate the growth evolution of the complex nanoarchitectures. By physically isolating intermediate reaction fractions, we performed an advanced characterization of the shape properties during their growth, not possible with routine characterization methods. Employing an in-house developed method to assign a specific identity to shapes, we followed the particle growth/deformation process and identified key reaction parameters for more precise control of the generated morphologies. Besides, this investigation led to the optimization of a one-pot multi-size and multi-shape synthesis of a variety of gold nanoparticles. In summary, we describe an optimized platform for highly controlled synthesis and a novel approach for the mechanistic study of shape-evolving nanomaterials.
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Affiliation(s)
- Qi Cai
- Centre for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Valentina Castagnola
- Centre for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Luca Boselli
- Centre for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Alirio Moura
- Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte, 59078-970, Natal, RN, Brazil
| | - Hender Lopez
- School of Physics and Optometric & Clinical Sciences, Technological University Dublin, Grangegorman, D07 XT95, Ireland
| | - Wei Zhang
- Centre for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.
| | - João M de Araújo
- Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte, 59078-970, Natal, RN, Brazil
| | - Kenneth A Dawson
- Centre for BioNano Interactions, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.
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5
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Li S, Wang Z, Shao Y, Zhang K, Mei L, Wang J. In situ detection of fluid media based on a three-dimensional dendritic silver surface-enhanced Raman scattering substrate. NEW J CHEM 2022. [DOI: 10.1039/d1nj05451a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A simple substitution reaction was used to grow 3D dendritic silver structures in microfluidic channels, and a highly active SERS detection platform was formed. The system can realize in situ detection of 10−10 mol L−1 R6G solution.
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Affiliation(s)
- Sha Li
- School of Mechanical Engineering, North University of China, Taiyuan, Shanxi 030051, China
| | - Zezhou Wang
- School of Mechanical Engineering, North University of China, Taiyuan, Shanxi 030051, China
| | - Yunpeng Shao
- School of Mechanical Engineering, North University of China, Taiyuan, Shanxi 030051, China
| | - Kai Zhang
- School of Mechanical Engineering, North University of China, Taiyuan, Shanxi 030051, China
| | - Linyu Mei
- School of Mechanical Engineering, North University of China, Taiyuan, Shanxi 030051, China
| | - Junyuan Wang
- School of Mechanical Engineering, North University of China, Taiyuan, Shanxi 030051, China
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6
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Paccotti N, Chiadò A, Novara C, Rivolo P, Montesi D, Geobaldo F, Giorgis F. Real-Time Monitoring of the In Situ Microfluidic Synthesis of Ag Nanoparticles on Solid Substrate for Reliable SERS Detection. BIOSENSORS 2021; 11:bios11120520. [PMID: 34940277 PMCID: PMC8699179 DOI: 10.3390/bios11120520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/10/2021] [Accepted: 12/13/2021] [Indexed: 05/12/2023]
Abstract
A sharpened control over the parameters affecting the synthesis of plasmonic nanostructures is often crucial for their application in biosensing, which, if based on surface-enhanced Raman spectroscopy (SERS), requires well-defined optical properties of the substrate. In this work, a method for the microfluidic synthesis of Ag nanoparticles (NPs) on porous silicon (pSi) was developed, focusing on achieving a fine control over the morphological characteristics and spatial distribution of the produced nanostructures to be used as SERS substrates. To this end, a pSi membrane was integrated in a microfluidic chamber in which the silver precursor solution was injected, allowing for the real-time monitoring of the reaction by UV-Vis spectroscopy. The synthesis parameters, such as the concentration of the silver precursor, the temperature, and the flow rate, were varied in order to study their effects on the final silver NPs' morphology. Variations in the flow rate affected the size distribution of the NPs, whereas both the temperature and the concentration of the silver precursor strongly influenced the rate of the reaction and the particle size. Consistently with the described trends, SERS tests using 4-MBA as a probe showed how the flow rate variation affected the SERS enhancement uniformity, and how the production of larger NPs, as a result of an increase in temperature or of the concentration of the Ag precursor, led to an increased SERS efficiency.
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Affiliation(s)
- Niccolò Paccotti
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
| | - Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
- Center for Sustainable Future Technologies @Polito, Istituto Italiano di Tecnologia, Corso Trento 21, 10129 Torino, Italy
| | - Chiara Novara
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
- Correspondence:
| | - Paola Rivolo
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
| | - Daniel Montesi
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
| | - Francesco Geobaldo
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
| | - Fabrizio Giorgis
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
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7
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Nie Y, Jin C, Zhang JXJ. Microfluidic In Situ Patterning of Silver Nanoparticles for Surface-Enhanced Raman Spectroscopic Sensing of Biomolecules. ACS Sens 2021; 6:2584-2592. [PMID: 34148342 DOI: 10.1021/acssensors.1c00117] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This work integrates the advantages of microfluidic devices, nanoparticle synthesis, and on-chip sensing of biomolecules. The concept of microreactors brings new opportunities in chemical synthesis, especially for metallic nanoparticles favorable in surface-enhanced Raman spectroscopy (SERS) for high-resolution and low-limit detection of biomolecules. However, still missing is our understanding of reactions at the microscale and how microsystems can be exploited in biosensing applications via precise control of nanomaterial synthesis. We investigate how microfluidic geometry affects nanoparticle patterning for high-resolution SERS-based sensing and propose a spiral-shaped microchannel that can achieve enhanced mixing, rapid reaction at room temperature, and uniform in situ patterning. The roles of channel geometry as the key parameter on patterning have been studied systematically to provide insight into the rational design of continuous microfluidic systems for SERS applications. We also demonstrate potential applications of this integrated system in label-free on-chip detection of 1 pM rhodamine B (enhancement factor, ∼4.3 × 1011) and a 1 nM 41-base single-stranded deoxyribonucleic acid (DNA) sequence (enhancement factor, ∼1.5 × 108). Our ready-to-use multifunctional system provides an alternative strategy for the facile fabrication of SERS-active substrates and promotes system integration, miniaturization, and on-site biological applications.
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Affiliation(s)
- Yuan Nie
- Thayer School of Engineering, Dartmouth College, 14 Engineering Dr., Hanover, New Hampshire 03755, United States
| | - Congran Jin
- Thayer School of Engineering, Dartmouth College, 14 Engineering Dr., Hanover, New Hampshire 03755, United States
| | - John X. J. Zhang
- Thayer School of Engineering, Dartmouth College, 14 Engineering Dr., Hanover, New Hampshire 03755, United States
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8
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Xie Z, Pu H, Sun DW. Computer simulation of submicron fluid flows in microfluidic chips and their applications in food analysis. Compr Rev Food Sci Food Saf 2021; 20:3818-3837. [PMID: 34056852 DOI: 10.1111/1541-4337.12766] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/24/2021] [Accepted: 04/15/2021] [Indexed: 01/01/2023]
Abstract
In recent years, countries around the world have maintained a zero-tolerance attitude toward safety problems in the food industry. In order to ensure human health, a fast, sensitive, and high-throughput analysis of food contaminants is necessary to ensure safe food products on the market. Microfluidics, as a high-efficiency and sensitive detection technology, has many advantages in the detection of food contaminants, including foodborne pathogens, pesticides, heavy metal ions, toxic substances, and so forth, especially in conjunction with a variety of submicron fluid driving methods, making food detection and analysis more efficient and accurate. This review introduces the principle of submicron fluid driving modes and discusses the driving simulation of submicron fluid in microfluidic chips. In addition, the latest developments in the application of simulation in food analysis from 2006 to 2020 are discussed, and the computer simulation of submicron fluid flow in microfluidic chips and its application and development trend in food analysis are also highlighted. The review indicates that microfluidic technology, using numerical simulation as an auxiliary tool, combined with traditional methods has greatly improved the detection and analysis of food products. In addition, microfluidics combined with a variety of control methods embodies the ability of specific, multifunctional, and sensitive detection and analysis of food products. The development of high-sensitivity, high-throughput, portable, integrated microfluidic chips will enable the technology to be applied in practice.
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Affiliation(s)
- Zhaoda Xie
- School of Mechanical and Electrical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, China.,Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou, China
| | - Hongbin Pu
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou, China.,Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou, China
| | - Da-Wen Sun
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou, China.,Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou, China.,Food Refrigeration and Computerized Food Technology, School of Agriculture and Food Science Centre, University College Dublin, National University of Ireland, Dublin, Ireland
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9
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Katoch V, Sharma N, Sharma M, Baghoria M, Panda JJ, Singh M, Prakash B. Microflow synthesis and enhanced photocatalytic dye degradation performance of antibacterial Bi 2O 3 nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:19155-19165. [PMID: 33398764 DOI: 10.1007/s11356-020-11711-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
Microreactors can play a crucial role in synthesis and rapid testing of various nanocatalyst to be used in addressing the issue of environmental contamination. We have reported the rapid fabrication of polydimethylsiloxane (PDMS) and poly(methyl methacrylate) (PMMA)-based microreactor for the flow synthesis and enhanced inline photocatalysis of bismuth oxide (Bi2O3) nanoparticles. A T-shaped microreactor with uniform circular cross-sectional channel having inner diameter of 450 μm was utilized for synthesizing Bi2O3 nanoparticles with narrow size distribution. Further, photocatalytic dye degradation efficiency for methyl orange (MO) was recorded by coating these Bi2O3 nanoparticles within the inner walls of PMMA-based serpentine microreactors under visible light. The enhanced dye degradation efficiency of as high as 96% within just 15 min of irradiation is reported. A comparative analysis has also been done for both conventional as well as the in-channel photocatalysis highlighting the advantages of microreactor based photocatalysis over the conventional method. Bi2O3 nanoparticles also showed excellent stability even after three cycles indicating reusability of coated microreactors in photocatalysis. The small concentration of as synthesized Bi2O3 nanoparticles also demonstrated high efficacy for the inhibition of Escherichia coli bacterial pathogens.
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Affiliation(s)
- Vibhav Katoch
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
- Centre for Nanoscience & Nanotechnology, UIEAST, Panjab University, Chandigarh, 160014, India
| | - Nipun Sharma
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Manju Sharma
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Mayank Baghoria
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Jiban Jyoti Panda
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Manish Singh
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Bhanu Prakash
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India.
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10
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Xia L, Li G. Recent progress of microfluidics in surface-enhanced Raman spectroscopic analysis. J Sep Sci 2021; 44:1752-1768. [PMID: 33630352 DOI: 10.1002/jssc.202001196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/20/2021] [Accepted: 02/20/2021] [Indexed: 12/21/2022]
Abstract
Surface-enhanced Raman spectroscopy is a significant analytical tool capable of fingerprint identification of molecule in a rapid and ultrasensitive manner. However, it is still hard to meet the requirements of practical sample analysis. The introduction of microfluidics can effectively enhance the performance of surface-enhanced Raman spectroscopy in complex sample analysis including reproducibility, selectivity, sensitivity, and speed. This review summarizes the recent progress of microfluidics in surface-enhanced Raman spectroscopic analysis through four combination approaches. First, microfluidic synthetic techniques offer uniform nano-/microparticle fabrication approaches for reproductive surface-enhanced Raman spectroscopic analysis. Second, the integration of microchip and surface-enhanced Raman spectroscopic substrate provides advanced devices for sensitive and efficient detection. Third, microfluidic sample preparations enable rapid separation and preconcentration of analyte prior to surface-enhanced Raman spectroscopic detection. Fourth, highly integrated microfluidic devices can be employed to realize multistep surface-enhanced Raman spectroscopic analysis containing material fabrication, sample preparation, and detection processes. Furthermore, the challenges and outlooks of the application of microfluidics in surface-enhanced Raman spectroscopic analysis are discussed.
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Affiliation(s)
- Ling Xia
- School of Chemistry, Sun Yat-sen University, Guangzhou, P. R. China
| | - Gongke Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, P. R. China
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11
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MacKenzie M, Chi H, Varma M, Pal P, Kar A, Paterson L. Femtosecond laser fabrication of silver nanostructures on glass for surface enhanced Raman spectroscopy. Sci Rep 2019; 9:17058. [PMID: 31745117 PMCID: PMC6864074 DOI: 10.1038/s41598-019-53328-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 10/25/2019] [Indexed: 11/09/2022] Open
Abstract
We report on an optimized fabrication protocol for obtaining silver nanoparticles on fused silica substrates via laser photoreduction of a silver salt solution. We find that multiple scans of the laser over the surface leads to a more uniform coverage of densely packed silver nanoparticles of approximately 50 nm diameter on the fused silica surface. Our substrates yield Raman enhancement factors of the order of 1011 of the signal detected from crystal violet. We use a theoretical model based on scanning electron microscope (SEM) images of our substrates to explain our experimental results. We also demonstrate how our technique can be extended to embedding silver nanoparticles in buried microfluidic channels in glass. The in situ laser inscription of silver nanoparticles on a laser machined, sub-surface, microfluidic channel wall within bulk glass paves the way for developing 3D, monolithic, fused silica surface enhance Raman spectroscopy (SERS) microfluidic sensing devices.
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Affiliation(s)
- Mark MacKenzie
- Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh, EH14 4AS, UK
| | - Haonan Chi
- Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh, EH14 4AS, UK
| | - Manoj Varma
- Centre for Nano Science and Engineering (CeNSE), Indian Institute of Science, Bangalore, Karnataka, India
| | - Parama Pal
- TCS Research and Innovation, Tata Consultancy Services, Bangalore, India
| | - Ajoy Kar
- Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh, EH14 4AS, UK
| | - Lynn Paterson
- Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh, EH14 4AS, UK.
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12
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Abstract
Microfluidics is an emerging field in diagnostics that allows for extremely precise fluid control and manipulation, enabling rapid and high-throughput sample processing in integrated micro-scale medical systems. These platforms are well-suited for both standard clinical settings and point-of-care applications. The unique features of microfluidics-based platforms make them attractive for early disease diagnosis and real-time monitoring of the disease and therapeutic efficacy. In this chapter, we will first provide a background on microfluidic fundamentals, microfluidic fabrication technologies, microfluidic reactors, and microfluidic total-analysis-systems. Next, we will move into a discussion on the clinical applications of existing and emerging microfluidic platforms for blood analysis, and for diagnosis and monitoring of cancer and infectious disease. Together, this chapter should elucidate the potential that microfluidic systems have in the development of effective diagnostic technologies through a review of existing technologies and promising directions.
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Affiliation(s)
- Alison Burklund
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - Amogha Tadimety
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - Yuan Nie
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - Nanjing Hao
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - John X J Zhang
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States; Norris Cotton Cancer Center, Dartmouth Hitchcock Medical Center, Lebanon, NH, United States.
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13
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Yan S, Chu F, Zhang H, Yuan Y, Huang Y, Liu A, Wang S, Li W, Li S, Wen W. Rapid, one-step preparation of SERS substrate in microfluidic channel for detection of molecules and heavy metal ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 220:117113. [PMID: 31141779 DOI: 10.1016/j.saa.2019.05.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/05/2019] [Accepted: 05/09/2019] [Indexed: 06/09/2023]
Abstract
On-chip fabrication of surface-enhanced Raman spectroscopy (SERS)-active materials enables continuous, real-time sensing of targets in the microfluidic chip. However, the current techniques require the time-consuming, complicated process and costly, bulky facilities. In this work, we present a novel method for synthesis of Ag nanostructures in a microfluidic channel via one-step electroless galvanic replacement reaction. The whole reaction could be achieved <10 mins, while the traditional methods take hours. The microfluidic channel has a Cu base, which can reduce Ag ions to Ag nanoparticles in the presence of AgNO3 solution. The new technique enables the label-free sensing of chemical molecules (i.e., methylene blue) and biomolecules (i.e., urea). Two proof-of-concept experiments are performed to verify the utilization of the prepared SERS substrate. First, the microfluidics-assisted SERS sensor is used to detect Hg ions in aqueous solution with high sensitivity and good selectivity. Second, the fabricated SERS-active material can couple with a concentration gradient generator for continuous SERS detection. This simple technique can be used in any laboratory without any bulky equipment and can realize numerous lab-on-a-chip applications with the integration of other microfluidic networks.
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Affiliation(s)
- Sheng Yan
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 401331, China; Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China..
| | - Fangjia Chu
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 401331, China
| | - Haiyan Zhang
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 401331, China
| | - Yuan Yuan
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 401331, China
| | - Yingzhou Huang
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 401331, China; Institute of Industrial Technology, Chongqing University, Chongqing 400044, China
| | - Anping Liu
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 401331, China; Institute of Industrial Technology, Chongqing University, Chongqing 400044, China
| | - Shuxia Wang
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 401331, China
| | - Weihua Li
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Shunbo Li
- Key Disciplines Laboratory of Novel Micro-Nano Devices and System Technology and Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, School of Optoelectronics Engineering, Chongqing University, Chongqing 400044, China..
| | - Weijia Wen
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing, 401331, China; Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China..
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14
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Lenz M, Sebastian B, Dittrich PS. Formation of Single Micro- and Nanowires with Extreme Aspect Ratios in Microfluidic Channels. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1901547. [PMID: 31237758 DOI: 10.1002/smll.201901547] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/30/2019] [Indexed: 05/27/2023]
Abstract
Shown here is the site-specific formation of single extraordinarily long metal-organic micro- and nanowires using a microfluidic device made of poly(dimethylsiloxane) (PDMS). This approach exploits two concepts, i) the diffusion of organic precursor molecules through PDMS and ii) the use of microfluidic channels as a growth template. To initiate wire formation, metal and organic precursor solutions are filled into different supply channels that are separated by PDMS. As the precursor diffuses through PDMS, and thereby infiltrates the adjacent channel, the growth of micro- and nanowires starts at the side walls of this adjacent channel. The formation yields single wires with sizes ranging from several hundreds of micrometers to millimeters at diameters of 0.5-2 µm. The principles of this formation pathway are demonstrated with the reaction of tetrathiafulvalene (TTF) and gold(III) ions that yields Au-TTF wires. The influence of various reaction parameters including the choice of solvents and the chip fabrication protocol on the reaction are evaluated. Based on these findings, a further microfluidic device design with orthogonally arranged channels is developed, and the formation of single wires in a channel-defined pattern is demonstrated. Moreover, the possibility of pulsed precursor supply allows for advanced control over the growth of the wires.
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Affiliation(s)
- Mario Lenz
- Department of Biosystems Science and Engineering, ETH Zurich, Mattenstrasse 26, CH-4058, Basel, Switzerland
| | - Bernhard Sebastian
- Department of Biosystems Science and Engineering, ETH Zurich, Mattenstrasse 26, CH-4058, Basel, Switzerland
| | - Petra S Dittrich
- Department of Biosystems Science and Engineering, ETH Zurich, Mattenstrasse 26, CH-4058, Basel, Switzerland
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15
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Lee S, Kim M, Yoon S. Colour and SERS patterning using core-satellite nanoassemblies. Chem Commun (Camb) 2019; 55:1466-1469. [PMID: 30644479 DOI: 10.1039/c8cc09270b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We explore spatial control of the formation of core-satellite nanoassemblies on glass substrates. UV irradiation leads to the photooxidative desorption of thiol linkers from gold nanoparticles deposited on the substrates, thereby prohibiting further assembly in the irradiated region. The distribution of assemblies and monomers yields a pattern with stark contrasts in colour and Raman enhancement. Our findings can be utilised in the fabrication of microfluidic SERS sensors, colour displays, photonic devices, and metamaterials.
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Affiliation(s)
- Sungwoon Lee
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
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16
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Ju T, Zhang Z, Li Y, Miao X, Ji J. Continuous production of lignin nanoparticles using a microchannel reactor and its application in UV-shielding films. RSC Adv 2019; 9:24915-24921. [PMID: 35528649 PMCID: PMC9069935 DOI: 10.1039/c9ra05064g] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 08/02/2019] [Indexed: 01/14/2023] Open
Abstract
A continuous production of spherical-like lignin nanoparticles with PVP/SDS as stabilizers via a microchannel reactor.
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Affiliation(s)
- Ting Ju
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Zhiliang Zhang
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Yang Li
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Xinfeng Miao
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Jianbing Ji
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
- Zhejiang Province Key Laboratory of Biofuel
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17
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Zhu Z, Espulgar WV, Yoshikawa H, Saito M, Fan B, Dou X, Tamiya E. Electrochemically Modulated Surface-Enhanced Raman Spectra of Aminoglutethimide (AGI) on a Ag-Sputtered Electrode. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180172] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zicheng Zhu
- Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Wilfred Villariza Espulgar
- Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiroyuki Yoshikawa
- Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Masato Saito
- Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Advanced Photonics and Biosensing Open Innovation Laboratory, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Bin Fan
- Optorun, 10-1 Takeno, Kawagoe, Saitama 350-0801, Japan
| | - Xiaoming Dou
- Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Institute of Photonics and Bio-medicine (IPBM), Graduate School of Science, East China University of Science and Technology (ECUST), 130 Meilong Road, Shanghai 200237, P. R. China
| | - Eiichi Tamiya
- Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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18
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Pilát Z, Kizovský M, Ježek J, Krátký S, Sobota J, Šiler M, Samek O, Buryška T, Vaňáček P, Damborský J, Prokop Z, Zemánek P. Detection of Chloroalkanes by Surface-Enhanced Raman Spectroscopy in Microfluidic Chips. SENSORS (BASEL, SWITZERLAND) 2018; 18:E3212. [PMID: 30249041 PMCID: PMC6210807 DOI: 10.3390/s18103212] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 09/18/2018] [Accepted: 09/21/2018] [Indexed: 01/12/2023]
Abstract
Optofluidics, a research discipline combining optics with microfluidics, currently aspires to revolutionize the analysis of biological and chemical samples, e.g., for medicine, pharmacology, or molecular biology. In order to detect low concentrations of analytes in water, we have developed an optofluidic device containing a nanostructured substrate for surface enhanced Raman spectroscopy (SERS). The geometry of the gold surface allows localized plasmon oscillations to give rise to the SERS effect, in which the Raman spectral lines are intensified by the interaction of the plasmonic field with the electrons in the molecular bonds. The SERS substrate was enclosed in a microfluidic system, which allowed transport and precise mixing of the analyzed fluids, while preventing contamination or abrasion of the highly sensitive substrate. To illustrate its practical use, we employed the device for quantitative detection of persistent environmental pollutant 1,2,3-trichloropropane in water in submillimolar concentrations. The developed sensor allows fast and simple quantification of halogenated compounds and it will contribute towards the environmental monitoring and enzymology experiments with engineered haloalkane dehalogenase enzymes.
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Affiliation(s)
- Zdeněk Pilát
- Institute of Scientific Instruments of the CAS, v.v.i., Czech Academy of Sciences, Kralovopolska 147, 61264 Brno, Czech Republic.
| | - Martin Kizovský
- Institute of Scientific Instruments of the CAS, v.v.i., Czech Academy of Sciences, Kralovopolska 147, 61264 Brno, Czech Republic.
| | - Jan Ježek
- Institute of Scientific Instruments of the CAS, v.v.i., Czech Academy of Sciences, Kralovopolska 147, 61264 Brno, Czech Republic.
| | - Stanislav Krátký
- Institute of Scientific Instruments of the CAS, v.v.i., Czech Academy of Sciences, Kralovopolska 147, 61264 Brno, Czech Republic.
| | - Jaroslav Sobota
- Institute of Scientific Instruments of the CAS, v.v.i., Czech Academy of Sciences, Kralovopolska 147, 61264 Brno, Czech Republic.
| | - Martin Šiler
- Institute of Scientific Instruments of the CAS, v.v.i., Czech Academy of Sciences, Kralovopolska 147, 61264 Brno, Czech Republic.
| | - Ota Samek
- Institute of Scientific Instruments of the CAS, v.v.i., Czech Academy of Sciences, Kralovopolska 147, 61264 Brno, Czech Republic.
| | - Tomáš Buryška
- Loschmidt Laboratories, Department of Experimental Biology and RECETOX, Faculty of Science, Masaryk University, Kamenice 5/A13, 62500 Brno, Czech Republic.
| | - Pavel Vaňáček
- Loschmidt Laboratories, Department of Experimental Biology and RECETOX, Faculty of Science, Masaryk University, Kamenice 5/A13, 62500 Brno, Czech Republic.
| | - Jiří Damborský
- Loschmidt Laboratories, Department of Experimental Biology and RECETOX, Faculty of Science, Masaryk University, Kamenice 5/A13, 62500 Brno, Czech Republic.
| | - Zbyněk Prokop
- Loschmidt Laboratories, Department of Experimental Biology and RECETOX, Faculty of Science, Masaryk University, Kamenice 5/A13, 62500 Brno, Czech Republic.
| | - Pavel Zemánek
- Institute of Scientific Instruments of the CAS, v.v.i., Czech Academy of Sciences, Kralovopolska 147, 61264 Brno, Czech Republic.
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19
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20
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Kant K, Abalde-Cela S. Surface-Enhanced Raman Scattering Spectroscopy and Microfluidics: Towards Ultrasensitive Label-Free Sensing. BIOSENSORS-BASEL 2018; 8:bios8030062. [PMID: 29966248 PMCID: PMC6163938 DOI: 10.3390/bios8030062] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 06/25/2018] [Accepted: 06/28/2018] [Indexed: 01/03/2023]
Abstract
Raman scattering and surface-enhanced Raman scattering (SERS) spectroscopy have demonstrated their potential as ultrasensitive detection techniques in the past decades. Specifically, and as a result of the flourishing of nanotechnology, SERS is nowadays one of the most powerful sensing techniques, not only because of the low detection limits that it can achieve, but also for the structural information that it offers and its capability of multiplexing. Similarly, microfluidics technology is having an increased presence not only in fundamental research, but also in the industry. The latter is because of the intrinsic characteristics of microfluidics, being automation, high-throughput, and miniaturization. However, despite miniaturization being an advantage, it comes together with the need to use ultrasensitive techniques for the interrogation of events happening in extremely small volumes. The combination of SERS with microfluidics can overcome bottlenecks present in both technologies. As a consequence, the integration of Raman and SERS in microfluidics is being investigated for the label-free biosensing of relevant research challenges.
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Affiliation(s)
- Krishna Kant
- International Iberian Nanotechnology Laboratory (INL), Avda Mestre José Veiga, 4715-310 Braga, Portugal.
| | - Sara Abalde-Cela
- International Iberian Nanotechnology Laboratory (INL), Avda Mestre José Veiga, 4715-310 Braga, Portugal.
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21
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Tian Y, Zhang H, Xu L, Chen M, Chen F. Self-assembled monolayers of bimetallic Au/Ag nanospheres with superior surface-enhanced Raman scattering activity for ultra-sensitive triphenylmethane dyes detection. OPTICS LETTERS 2018; 43:635-638. [PMID: 29444040 DOI: 10.1364/ol.43.000635] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 01/04/2018] [Indexed: 06/08/2023]
Abstract
The bimetallic Au/Ag self-assembled monolayers (SAMs) were constructed by using mono-dispersed Au/Ag nanospheres (Ag: 4.07%-34.53%) via evaporation-based assembly strategy. The composition-dependent surface-enhanced Raman scattering (SERS) spectroscopy revealed that the Au/Ag (Ag: 16.83%) SAMs provide maximized activity for triphenylmethane dyes detection. With the inter-metallic synergy, the optimized SAMs enable the Raman intensity of crystal violet molecules to be about 223 times higher than that of monometallic Au SAMs. Moreover, the SERS signals with excellent uniformity (<5% variation) are sensitive down to 10-13 M concentrations because of the optimal matching between bimetallic plasmon resonance and the incident laser wavelength.
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22
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Xing Y, Dittrich PS. One-Dimensional Nanostructures: Microfluidic-Based Synthesis, Alignment and Integration towards Functional Sensing Devices. SENSORS 2018; 18:s18010134. [PMID: 29303990 PMCID: PMC5795670 DOI: 10.3390/s18010134] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 12/29/2017] [Accepted: 12/31/2017] [Indexed: 12/23/2022]
Abstract
Microfluidic-based synthesis of one-dimensional (1D) nanostructures offers tremendous advantages over bulk approaches e.g., the laminar flow, reduced sample consumption and control of self-assembly of nanostructures. In addition to the synthesis, the integration of 1D nanomaterials into microfluidic chips can enable the development of diverse functional microdevices. 1D nanomaterials have been used in applications such as catalysts, electronic instrumentation and sensors for physical parameters or chemical compounds and biomolecules and hence, can be considered as building blocks. Here, we outline and critically discuss promising strategies for microfluidic-assisted synthesis, alignment and various chemical and biochemical applications of 1D nanostructures. In particular, the use of 1D nanostructures for sensing chemical/biological compounds are reviewed.
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Affiliation(s)
- Yanlong Xing
- Leibniz-Institut für Analytische Wissenschaften-ISAS-e. V, 12489 Berlin, Germany.
| | - Petra S Dittrich
- Department of Biosystems Science and Engineering, ETH Zürich, 4058 Basel, Switzerland.
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23
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SERS-microfluidic systems: A potential platform for rapid analysis of food contaminants. Trends Food Sci Technol 2017. [DOI: 10.1016/j.tifs.2017.10.001] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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24
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Tycova A, Prikryl J, Foret F. Recent strategies toward microfluidic-based surface-enhanced Raman spectroscopy. Electrophoresis 2017; 38:1977-1987. [DOI: 10.1002/elps.201700046] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/20/2017] [Accepted: 04/18/2017] [Indexed: 12/25/2022]
Affiliation(s)
- Anna Tycova
- Institute of Analytical Chemistry of the CAS; v. v. i.; Brno Czech Republic
| | - Jan Prikryl
- Institute of Analytical Chemistry of the CAS; v. v. i.; Brno Czech Republic
| | - Frantisek Foret
- Institute of Analytical Chemistry of the CAS; v. v. i.; Brno Czech Republic
- CEITEC - Central European Institute of Technology; Brno Czech Republic
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25
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Liu X, Astruc D. From Galvanic to Anti-Galvanic Synthesis of Bimetallic Nanoparticles and Applications in Catalysis, Sensing, and Materials Science. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605305. [PMID: 28128862 DOI: 10.1002/adma.201605305] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 11/01/2016] [Indexed: 05/28/2023]
Abstract
The properties of two alloyed metals have been known since the Bronze Age to outperform those of a single metal. How alloying and mixing metals applies to the nanoworld is now attracting considerable attention. The galvanic process, which is more than two centuries old and involves the reduction of a noble-metal cation by a less noble metal, has not only been used in technological processes, but also in the design of nanomaterials for the synthesis of bimetallic transition-metal nanoparticles. The background and nanoscience applications of the galvanic reactions (GRs) are reviewed here, in particular with emphasis on recent progress in bimetallic catalysis. Very recently, new reactions have been discovered with nanomaterials that contradict the galvanic principle, and these reactions, called anti-galvanic reactions (AGRs), are now attracting much interest for their mechanistic, synthetic, catalytic, and sensor aspects. The second part of the review deals with these AGRs and compares GRs and AGRs, including the intriguing AGRs mechanism and the first applications.
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Affiliation(s)
- Xiang Liu
- ISM, UMR CNRS 5255, Université de Bordeaux, 351 Cours de la Liberation, 33405, Talence Cedex, France
- UMR 6226, Institut des Sciences Chimiques de Rennes, CNRS-Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Didier Astruc
- ISM, UMR CNRS 5255, Université de Bordeaux, 351 Cours de la Liberation, 33405, Talence Cedex, France
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26
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Yuan Y, Panwar N, Yap SHK, Wu Q, Zeng S, Xu J, Tjin SC, Song J, Qu J, Yong KT. SERS-based ultrasensitive sensing platform: An insight into design and practical applications. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.02.006] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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27
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Buja OM, Gordan OD, Leopold N, Morschhauser A, Nestler J, Zahn DRT. Microfluidic setup for on-line SERS monitoring using laser induced nanoparticle spots as SERS active substrate. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2017; 8:237-243. [PMID: 28243562 PMCID: PMC5301917 DOI: 10.3762/bjnano.8.26] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/03/2017] [Indexed: 06/06/2023]
Abstract
A microfluidic setup which enables on-line monitoring of residues of malachite green (MG) using surface-enhanced Raman scattering (SERS) is reported. The SERS active substrate was prepared via laser induced synthesis of silver or gold nanoparticles spot on the bottom of a 200 μm inner dimension glass capillary, by focusing the laser beam during a continuous flow of a mixture of silver nitrate or gold chloride and sodium citrate. The described microfluidic setup enables within a few minutes the monitoring of several processes: the synthesis of the SERS active spot, MG adsorption to the metal surface, detection of the analyte when saturation of the SERS signal is reached, and finally, the desorption of MG from the spot. Moreover, after MG complete desorption, the regeneration of the SERS active spot was achieved. The detection of MG was possible down to 10-7 M concentration with a good reproducibility when using silver or gold spots as SERS substrate.
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Affiliation(s)
- Oana-M Buja
- Semiconductor Physics, Technische Universität Chemnitz, D-09107 Chemnitz, Germany
| | - Ovidiu D Gordan
- Semiconductor Physics, Technische Universität Chemnitz, D-09107 Chemnitz, Germany
| | - Nicolae Leopold
- Faculty of Physics, Babes-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
- MEDFUTURE - Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Louis Pasteur 4–6, 400349 Cluj-Napoca, Romania
| | - Andreas Morschhauser
- Fraunhofer Institute for Electronic Nano Systems, Technologie-Campus 3, 09126 Chemnitz, Germany
| | - Jörg Nestler
- Fraunhofer Institute for Electronic Nano Systems, Technologie-Campus 3, 09126 Chemnitz, Germany
| | - Dietrich R T Zahn
- Semiconductor Physics, Technische Universität Chemnitz, D-09107 Chemnitz, Germany
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28
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Ma J, Lee SMY, Yi C, Li CW. Controllable synthesis of functional nanoparticles by microfluidic platforms for biomedical applications - a review. LAB ON A CHIP 2017; 17:209-226. [PMID: 27991629 DOI: 10.1039/c6lc01049k] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Nanoparticles have drawn significant attention in biomedicine due to their unique optical, thermal, magnetic and electrical properties which are highly related to their size and morphologies. Recently, microfluidic systems have shown promising potential to modulate critical stages in nanosynthesis, such as nucleation, growth and reaction conditions so that the size, size distribution, morphology, and reproducibility of nanoparticles are optimized in a high throughput manner. In this review, we put an emphasis on a decade of developments of microfluidic systems for engineering nanoparticles in various applications including imaging, biosensing, drug delivery, and theranostic applications.
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Affiliation(s)
- Junping Ma
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China.
| | - Simon Ming-Yuen Lee
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China.
| | - Changqing Yi
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Engineering, Sun Yat-Sen University, Guangzhou, China. and Research Institute of Sun Yat-Sen University in Shenzhen, Shenzhen, China
| | - Cheuk-Wing Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China.
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29
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Chemical Separation on Silver Nanorods Surface Monitored by TOF-SIMS. J CHEM-NY 2017. [DOI: 10.1155/2017/1608056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The article introduces a possible chemical separation of a mixture of two compounds on the metal nanorods surface. A silver nanorods surface has been prepared by controlled electrochemical deposition in anodic alumina oxide (AAO) template. Rhodamine 6G and 4-aminothiophenol have been directly applied to the sampling point on a silver nanorods surface in an aliquot mixture. The position of the resolved compounds was analysed by time-of-flight secondary ion mass spectrometry (TOF-SIMS) which measured the fragments and the molecular ions of the two compounds separated on the silver nanorods surface. Rhodamine 6G has been preconcentrated as 1.5 mm radial from the sampling point while 4-aminothiophenol formed a continuous self-assembled monolayer on the silver nanorods surface with a maximum molecular ion intensity at a distance of 0.5 mm from the sampling point. The separation of the single chemical components from the two-component mixture over the examined silver nanostructured films could clearly be shown. A fast separation on the mentioned nanotextured films was observed (within 50 s). This procedure can be easily integrated into the micro/nanofluidic systems or chips and different detection systems can be applied.
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30
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Jahn IJ, Žukovskaja O, Zheng XS, Weber K, Bocklitz TW, Cialla-May D, Popp J. Surface-enhanced Raman spectroscopy and microfluidic platforms: challenges, solutions and potential applications. Analyst 2017; 142:1022-1047. [DOI: 10.1039/c7an00118e] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The review provides an overview of the development in the field of surface-enhanced Raman spectroscopy combined with microfluidic platforms.
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Affiliation(s)
- I. J. Jahn
- Friedrich Schiller University Jena
- Institute of Physical Chemistry and Abbe Center of Photonics
- 07745 Jena
- Germany
- Leibniz Institute of Photonic Technology Jena
| | - O. Žukovskaja
- Friedrich Schiller University Jena
- Institute of Physical Chemistry and Abbe Center of Photonics
- 07745 Jena
- Germany
| | - X.-S. Zheng
- Leibniz Institute of Photonic Technology Jena
- 07745 Jena
- Germany
| | - K. Weber
- Friedrich Schiller University Jena
- Institute of Physical Chemistry and Abbe Center of Photonics
- 07745 Jena
- Germany
- Leibniz Institute of Photonic Technology Jena
| | - T. W. Bocklitz
- Friedrich Schiller University Jena
- Institute of Physical Chemistry and Abbe Center of Photonics
- 07745 Jena
- Germany
- Leibniz Institute of Photonic Technology Jena
| | - D. Cialla-May
- Friedrich Schiller University Jena
- Institute of Physical Chemistry and Abbe Center of Photonics
- 07745 Jena
- Germany
- Leibniz Institute of Photonic Technology Jena
| | - J. Popp
- Friedrich Schiller University Jena
- Institute of Physical Chemistry and Abbe Center of Photonics
- 07745 Jena
- Germany
- Leibniz Institute of Photonic Technology Jena
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31
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A microfluidic chip based on an ITO support modified with Ag-Au nanocomposites for SERS based determination of melamine. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1990-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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32
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Zhu Z, Yu M, Jin Y. Surface-enhanced Raman Scattering Sensor Based on the Ag-Zn(OH)F Network. CHEM LETT 2016. [DOI: 10.1246/cl.160029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Zhiyuan Zhu
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Peking University
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology
| | - Min Yu
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Peking University
| | - Yufeng Jin
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Peking University
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33
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Du L, Wang YJ, Wang K, Shen C, Luo GS. In situ dispersion of oil-based Ag nanocolloids by microdroplet coalescence and their applications in SERS detection. RSC Adv 2016. [DOI: 10.1039/c6ra05269j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Monodispersity and size uniformity of the nanoparticles coated on film-like nanosensors are critical for detection efficiency.
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Affiliation(s)
- L. Du
- The State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Membrane Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Y. J. Wang
- The State Key Laboratory of Chemical Engineering
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
| | - K. Wang
- The State Key Laboratory of Chemical Engineering
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
| | - C. Shen
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - G. S. Luo
- The State Key Laboratory of Chemical Engineering
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
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34
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Zhao HZ, Xu Y, Wang CY, Wang R, Xiang ST, Chen L. Design and fabrication of a microfluidic SERS chip with integrated Ag film@nanoAu. RSC Adv 2016. [DOI: 10.1039/c5ra25018h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
A “sandwich” microfluidic surface enhanced Raman scattering (SERS) chip with Ag film@nanoAu prepared in a microchannel was proposed and fabricated in situ. The detection limit for Rhodamine 6G was 10−8 M and the enhancement factor was 3.8 × 105.
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Affiliation(s)
- Hua-Zhou Zhao
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- China
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Technology
| | - Yi Xu
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- China
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Technology
| | - Chun-Yan Wang
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Technology
- Chongqing
- China
- International R & D Center of Micro-nano Systems and New Materials Technology
- Chongqing
| | - Rong Wang
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- China
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Technology
| | - Song-Tao Xiang
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- China
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Technology
| | - Li Chen
- Defense Key Disciplines Lab of Novel Micro-nano Devices and System Technology
- Chongqing
- China
- International R & D Center of Micro-nano Systems and New Materials Technology
- Chongqing
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35
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Sharvani S, Upadhayaya K, Kumari G, Narayana C, Shivaprasad SM. Nano-morphology induced additional surface plasmon resonance enhancement of SERS sensitivity in Ag/GaN nanowall network. NANOTECHNOLOGY 2015; 26:465701. [PMID: 26502004 DOI: 10.1088/0957-4484/26/46/465701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The GaN nanowall network, formed by opening the screw dislocations by kinetically controlled MBE growth, possesses a large surface and high conductivity. Sharp apexed nanowalls show higher surface electron concentration in the band-tail states, in comparison to blunt apexed nanowalls. Uncapped silver nanoparticles are vapor deposited on the blunt and sharp GaN nanowall networks to study the morphological dependence of band-edge plasmon-coupling. Surface enhanced Raman spectroscopy studies performed with a rhodamine 6G analyte on these two configurations clearly show that the sharp nanowall morphology with smaller Ag nanoparticles shows higher enhancement of the Raman signal. A very large enhancement factor of 2.8 × 10(7) and a very low limit of detection of 10(-10) M is observed, which is attributed to the surface plasmon resonance owing to the high surface electron concentration on the GaN nanowall in addition to that of the Ag nanoparticles. The significantly higher sensitivity with same-sized Ag nanoparticles confirms the unconventional role of morphology-dependent surface charge carrier concentration of GaN nanowalls in the enhancement of Raman signals.
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Affiliation(s)
- S Sharvani
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore-560064, India
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36
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Wang M, Zhao C, Miao X, Zhao Y, Rufo J, Liu YJ, Huang TJ, Zheng Y. Plasmofluidics: Merging Light and Fluids at the Micro-/Nanoscale. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:4423-44. [PMID: 26140612 PMCID: PMC4856436 DOI: 10.1002/smll.201500970] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 05/07/2015] [Indexed: 05/14/2023]
Abstract
Plasmofluidics is the synergistic integration of plasmonics and micro/nanofluidics in devices and applications in order to enhance performance. There has been significant progress in the emerging field of plasmofluidics in recent years. By utilizing the capability of plasmonics to manipulate light at the nanoscale, combined with the unique optical properties of fluids and precise manipulation via micro/nanofluidics, plasmofluidic technologies enable innovations in lab-on-a-chip systems, reconfigurable photonic devices, optical sensing, imaging, and spectroscopy. In this review article, the most recent advances in plasmofluidics are examined and categorized into plasmon-enhanced functionalities in microfluidics and microfluidics-enhanced plasmonic devices. The former focuses on plasmonic manipulations of fluids, bubbles, particles, biological cells, and molecules at the micro/nanoscale. The latter includes technological advances that apply microfluidic principles to enable reconfigurable plasmonic devices and performance-enhanced plasmonic sensors. The article is concluded with perspectives on the upcoming challenges, opportunities, and possible future directions of the emerging field of plasmofluidics.
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Affiliation(s)
- Mingsong Wang
- Department of Mechanical Engineering, Materials Science and Engineering Program Texas Materials Institute The University of Texas at Austin, Austin, Texas 78712, USA
| | - Chenglong Zhao
- Department of Physics Electro-Optics, Graduate Program University of Dayton, Dayton, Ohio 45469, USA
| | - Xiaoyu Miao
- Google, Inc., 1600 Amphitheatre Pkwy, Mountain View, CA 94043, USA
| | - Yanhui Zhao
- Department of Engineering Science and Mechanics, Department of Biomedical Engineering, Materials Research Institute, Huck Institute of Life Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Joseph Rufo
- Department of Engineering Science and Mechanics, Department of Biomedical Engineering, Materials Research Institute, Huck Institute of Life Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Yan Jun Liu
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR) 3 Research Link, Singapore 117602, Singapore
| | - Tony Jun Huang
- Department of Engineering Science and Mechanics, Department of Biomedical Engineering, Materials Research Institute, Huck Institute of Life Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Yuebing Zheng
- Department of Mechanical Engineering, Materials Science and Engineering Program Texas Materials Institute The University of Texas at Austin, Austin, Texas 78712, USA
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37
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Liberman V, Hamad-Schifferli K, Thorsen TA, Wick ST, Carr PA. In situ microfluidic SERS assay for monitoring enzymatic breakdown of organophosphates. NANOSCALE 2015; 7:11013-11023. [PMID: 26041657 DOI: 10.1039/c5nr01974e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this paper, we report on a method to probe the breakdown of the organophosphate (OP) simulants o,s-diethyl methyl phosphonothioate (OSDMP) and demeton S by the enzyme organophosphorous hydrolase (OPH) in a microfluidic device by surface enhanced Raman spectroscopy (SERS). SERS hotspots were formed on-demand inside the microfluidic device by laser-induced aggregation of injected Ag NPs suspensions. The Ag NP clusters, covering micron-sized areas, were formed within minutes using a conventional confocal Raman laser microscope. These Ag NP clusters were used to enhance the Raman spectra of the thiol products of OP breakdown in the microfluidic device: ethanethiol (EtSH) and (ethylsulfanyl) ethane-1-thiol (2-EET). When the OPH enzyme and its substrates OSDMP and demeton S were introduced, the thiolated breakdown products were generated, resulting in changes in the SERS spectra. With the ability to analyze reaction volumes as low as 20 nL, our approach demonstrates great potential for miniaturization of SERS analytical protocols.
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Affiliation(s)
- Vladimir Liberman
- MIT Lincoln Laboratory, Chemical, Microsystem, and Nanoscale Technologies, 244 Wood St., Lexington, Massachusetts, USA.
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38
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Lamberti A, Virga A, Rivolo P, Angelini A, Giorgis F. Easy Tuning of Surface and Optical Properties of PDMS Decorated by Ag Nanoparticles. J Phys Chem B 2015; 119:8194-200. [DOI: 10.1021/acs.jpcb.5b02581] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrea Lamberti
- Department of Applied Science
and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Alessandro Virga
- Department of Applied Science
and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Paola Rivolo
- Department of Applied Science
and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Angelo Angelini
- Department of Applied Science
and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Fabrizio Giorgis
- Department of Applied Science
and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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39
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Parisi J, Dong Q, Lei Y. In situ microfluidic fabrication of SERS nanostructures for highly sensitive fingerprint microfluidic-SERS sensing. RSC Adv 2015. [DOI: 10.1039/c4ra15174g] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A microfluidic-SERS device has been fabricated via a facile in situ galvanic replacement for ultrasensitive detection of pesticides and herbicides.
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Affiliation(s)
- Joseph Parisi
- Department of Chemical and Biomolecular Engineering
- University of Connecticut
- Storrs
- USA
| | - Qiuchen Dong
- Department of Biomedical Engineering
- University of Connecticut
- Storrs
- USA
| | - Yu Lei
- Department of Chemical and Biomolecular Engineering
- University of Connecticut
- Storrs
- USA
- Department of Biomedical Engineering
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40
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Gu HX, Li DW, Xue L, Zhang YF, Long YT. A portable microcolumn based on silver nanoparticle functionalized glass fibers and its SERS application. Analyst 2015; 140:7934-8. [DOI: 10.1039/c5an01517k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We presented a facile method for the preparation of a portable detection column integrated with silver nanoparticle (Ag NP) functionalized glass fibers for surface-enhanced Raman scattering (SERS).
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Affiliation(s)
- Hai-Xin Gu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- Shanghai Fire Research Institute of Ministry of Public Security
| | - Da-Wei Li
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Lin Xue
- Shanghai Fire Research Institute of Ministry of Public Security
- Shanghai 200438
- P. R. China
| | - Yong-Feng Zhang
- Shanghai Fire Research Institute of Ministry of Public Security
- Shanghai 200438
- P. R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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41
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Lamberti A, Virga A, Angelini A, Ricci A, Descrovi E, Cocuzza M, Giorgis F. Metal–elastomer nanostructures for tunable SERS and easy microfluidic integration. RSC Adv 2015. [DOI: 10.1039/c4ra12168f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stretchable plasmonic nanostructures constituted by Ag nanoparticles on flexible elastomeric matrices are synthesized and used as surface-enhanced Raman scattering (SERS) substrates.
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Affiliation(s)
- Andrea Lamberti
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
| | - Alessandro Virga
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
| | - Angelo Angelini
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
| | - Alessandro Ricci
- Istituto Italiano di Tecnologia
- Center for Space Human Robotics
- Torino
- Italy
| | - Emiliano Descrovi
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
| | - Matteo Cocuzza
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
- Istituto Italiano di Tecnologia
| | - Fabrizio Giorgis
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
- Istituto Italiano di Tecnologia
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42
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Song W, Psaltis D, Crozier KB. Superhydrophobic bull's-eye for surface-enhanced Raman scattering. LAB ON A CHIP 2014; 14:3907-3911. [PMID: 25141812 DOI: 10.1039/c4lc00477a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a micro-patterned silicon structure that enables the preparation of a substrate for surface-enhanced Raman scattering (SERS) and pre-concentration of the analyte molecules. The structure is designed to produce a hydrophobicity gradient. As a result, a water droplet placed on it will remain centred on the structure as it dries, enabling delivery of materials to its centre. The structure is therefore referred to as a superhydrophobic bull's-eye. A water droplet containing gold colloids placed on it dries to produce a cluster at the bull's-eye centre. A second water droplet placed on it, this time containing analyte molecules, dries such that the molecules are delivered to the gold colloid cluster. We demonstrate the detection of molecules at low concentrations (Rhodamine 6G at 10(-15) M) from small droplets.
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Affiliation(s)
- Wuzhou Song
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
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43
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Lee H, Xu L, Koh D, Nyayapathi N, Oh KW. Various on-chip sensors with microfluidics for biological applications. SENSORS 2014; 14:17008-36. [PMID: 25222033 PMCID: PMC4208211 DOI: 10.3390/s140917008] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 08/29/2014] [Accepted: 09/10/2014] [Indexed: 12/29/2022]
Abstract
In this paper, we review recent advances in on-chip sensors integrated with microfluidics for biological applications. Since the 1990s, much research has concentrated on developing a sensing system using optical phenomena such as surface plasmon resonance (SPR) and surface-enhanced Raman scattering (SERS) to improve the sensitivity of the device. The sensing performance can be significantly enhanced with the use of microfluidic chips to provide effective liquid manipulation and greater flexibility. We describe an optical image sensor with a simpler platform for better performance over a larger field of view (FOV) and greater depth of field (DOF). As a new trend, we review consumer electronics such as smart phones, tablets, Google glasses, etc. which are being incorporated in point-of-care (POC) testing systems. In addition, we discuss in detail the current optical sensing system integrated with a microfluidic chip.
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Affiliation(s)
- Hun Lee
- Department of Electrical Engineering, University at Buffalo, State University of New York (SUNY at Buffalo), Buffalo, NY 14260, USA.
| | - Linfeng Xu
- Department of Electrical Engineering, University at Buffalo, State University of New York (SUNY at Buffalo), Buffalo, NY 14260, USA.
| | - Domin Koh
- Department of Electrical Engineering, University at Buffalo, State University of New York (SUNY at Buffalo), Buffalo, NY 14260, USA.
| | - Nikhila Nyayapathi
- Department of Electrical Engineering, University at Buffalo, State University of New York (SUNY at Buffalo), Buffalo, NY 14260, USA.
| | - Kwang W Oh
- Department of Electrical Engineering, University at Buffalo, State University of New York (SUNY at Buffalo), Buffalo, NY 14260, USA.
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44
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Hu C, Yue W, Yang M. Nanoparticle-based signal generation and amplification in microfluidic devices for bioanalysis. Analyst 2014; 138:6709-20. [PMID: 24067742 DOI: 10.1039/c3an01321a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Signal generation and amplification based on nanomaterials and microfluidic techniques have both attracted considerable attention separately due to the demands for ultrasensitive and high-throughput detection of biomolecules. This article reviews the latest development of signal amplification strategies based on nanoparticles for bioanalysis and their integration and applications in microfluidic systems. The applications of nanoparticles in bioanalysis were categorized based on the different approaches of signal amplification, and the microfluidic techniques were summarized based on cell analysis and biomolecule detection with a focus on the integration of nanoparticle-based amplification in microfluidic devices for ultrasensitive bioanalysis. The advantages and limitations of the combination of nanoparticles-based amplification with microfluidic techniques were evaluated, and the possible developments for future research were discussed.
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Affiliation(s)
- Chong Hu
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, People's Republic of China.
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45
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Kadilak AL, Liu Y, Shrestha S, Bernard JR, Mustain WE, Shor LM. Selective deposition of chemically-bonded gold electrodes onto PDMS microchannel side walls. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.06.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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46
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Yin HJ, Chan YF, Wu ZL, Xu HJ. Si/ZnO nanocomb arrays decorated with Ag nanoparticles for highly efficient surface-enhanced Raman scattering. OPTICS LETTERS 2014; 39:4184-4187. [PMID: 25121682 DOI: 10.1364/ol.39.004184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
High-density ZnO nanocombs were first grown on a nanoporous silicon pillar array, and pre-prepared 3D Si/ZnO/Ag nanocomb arrays were employed as substrates for surface-enhanced Raman scattering (SERS). The finite-difference time-domain simulation result shows that two kinds of inter-Ag-NP nanogaps in the geometry create a large number of SERS "hot spots," which contributes to the detection limits for rhodamine-6G as low as 10⁻¹² M and the Raman enhancement factor as large as 10⁹. The linear dependence between the Raman peak intensities and the concentrations of thiram provides a new calibration method for rapid and quantitative detection of trace organic molecules.
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47
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Kim D, Campos AR, Datt A, Gao Z, Rycenga M, Burrows ND, Greeneltch NG, Mirkin CA, Murphy CJ, Van Duyne RP, Haynes CL. Microfluidic-SERS devices for one shot limit-of-detection. Analyst 2014; 139:3227-3234. [PMID: 24756225 PMCID: PMC4067008 DOI: 10.1039/c4an00357h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Microfluidic sensing platforms facilitate parallel, low sample volume detection using various optical signal transduction mechanisms. Herein, we introduce a simple mixing microfluidic device, enabling serial dilution of introduced analyte solution that terminates in five discrete sensing elements. We demonstrate the utility of this device with on-chip fluorescence and surface-enhanced Raman scattering (SERS) detection of analytes, and we demonstrate device use both when combined with a traditional inflexible SERS substrate and with SERS-active nanoparticles that are directly incorporated into microfluidic channels to create a flexible SERS platform. The results indicate, with varying sensitivities, that either flexible or inflexible devices can be easily used to create a calibration curve and perform a limit of detection study with a single experiment.
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Affiliation(s)
- Donghyuk Kim
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota, 55455 U.S.A
| | - Antonio R Campos
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota, 55455 U.S.A
| | - Ashish Datt
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota, 55455 U.S.A
| | - Zhe Gao
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota, 55455 U.S.A
| | - Matthew Rycenga
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd, Evanston, Illinois 60208 U.S.A
| | - Nathan D Burrows
- Department of Chemistry, University of Illinois at Urbana-Champaign, 505 S Mathews Avenue, Urbana, Illinois 61801 U.S.A
| | - Nathan G Greeneltch
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd, Evanston, Illinois 60208 U.S.A
| | - Chad A Mirkin
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd, Evanston, Illinois 60208 U.S.A
| | - Catherine J Murphy
- Department of Chemistry, University of Illinois at Urbana-Champaign, 505 S Mathews Avenue, Urbana, Illinois 61801 U.S.A
| | - Richard P Van Duyne
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd, Evanston, Illinois 60208 U.S.A
| | - Christy L Haynes
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota, 55455 U.S.A
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48
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Huang Y, Dandapat A, Kim DH. Covalently capped seed-mediated growth: a unique approach toward hierarchical growth of gold nanocrystals. NANOSCALE 2014; 6:6478-6481. [PMID: 24828050 DOI: 10.1039/c4nr00587b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Hierarchical metal nanostructures have attracted increasing interest due to their unique morphology-dependent properties. Here, we introduce a new and efficient method to synthesize hierarchical gold nanostructures in different shapes using the covalently capped seed-mediated growth approach.
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Affiliation(s)
- Youju Huang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637457, Singapore.
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49
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Xu L, Peng J, Srinivasakannan C, Zhang L, Zhang D, Liu C, Wang S, Shen AQ. Synthesis of copper nanoparticles by a T-shaped microfluidic device. RSC Adv 2014. [DOI: 10.1039/c4ra04247f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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50
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Sun X, Stagon S, Huang H, Chen J, Lei Y. Functionalized aligned silver nanorod arrays for glucose sensing through surface enhanced Raman scattering. RSC Adv 2014. [DOI: 10.1039/c4ra02423k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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