Evaluation of selected SERS substrates for trace detection of explosive materials using portable Raman systems

Liszewska, Malwina; Bartosewicz, Bartosz; Budner, Bogusław; Nasiłowska, Barbara; Szala, Mateusz; Weyher, J.L.; Dzięcielewski, Igor; Mierczyk, Zygmunt; Jankiewicz, Bartłomiej J.

doi:10.1016/j.vibspec.2018.11.002

Cited by 48 publications

(22 citation statements)

References 40 publications

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“…SERS was discovered in the 1970s [6–8] and a considerable amount of research has been devoted to this topic. However, there is still a need for further development of reproducible and inexpensive SERS substrates [9]. SERS substrates can be fabricated by a multitude of techniques.…”

Section: Introductionmentioning

confidence: 99%

Revisiting semicontinuous silver films as surface-enhanced Raman spectroscopy substrates

Liszewska

Budner

Norek

et al. 2019

Beilstein J. Nanotechnol.

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Surface-enhanced Raman spectroscopy (SERS) is a very promising analytical technique for the detection and identification of trace amounts of analytes. Among the many substrates used in SERS of great interest are nanostructures fabricated using physical methods, such as semicontinuous metal films obtained via electron beam physical vapor deposition. In these studies, we investigate the influence of morphology of semicontinuous silver films on their SERS properties. The morphologies studied ranged from isolated particles through percolated films to almost continuous films. We found that films below the percolation threshold (transition from dielectric-like to metal-like) made of isolated silver structures provided the largest SERS enhancement of 4-aminothiophenol (4-ATP) analyte signals. The substrate closest to the percolation threshold has the SERS signal about four times lower than the highest signal sample.

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Section: Introductionmentioning

confidence: 99%

Revisiting semicontinuous silver films as surface-enhanced Raman spectroscopy substrates

Liszewska

Budner

Norek

et al. 2019

Beilstein J. Nanotechnol.

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“…Surface-enhanced Raman spectroscopy (SERS) can be used to detect biomolecules [ 1 – 3 ], explosives [ 4 – 6 ], and pesticide residues [ 7 – 9 ]. Plasmonic metal nanostructures are often used as SERS substrates to increase the molecule-specific Raman signal by several orders of magnitude.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of nano/microstructures for SERS substrates using an electrochemical method

Zhang

Jia

et al. 2020

Beilstein J. Nanotechnol.

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Based on an electrochemical method, three-dimensional arrayed nanopore structures are machined onto a Mg surface. The structured Mg surface is coated with a thin gold (Au) film, which is used as a surface-enhanced Raman scattering (SERS) substrate. A rhodamine 6G (R6G) probe molecule is used as the detection agent for the SERS measurement. Different sizes of arrayed micro/nanostructures are fabricated by different treatment time using the electrochemical process. The topographies of these micro/nanostructures and the thickness of the Au film have an influence on the Raman intensity of the Mg substrate. Furthermore, when the thickness of Au film coating is held constant, the Raman intensity on the structured Mg substrates is about five times higher after a treatment time of 1 min when compared with other treatment times. The SERS enhancement factor ranges from 106 to 1.75 × 107 under these experimental conditions. Additionally, a 10−6 mol·L−1 solution of lysozyme was successfully detected using the Mg–Au nanopore substrates. Our low-cost method is reproducible, homogeneous, and suitable for the fabrication of SERS substrates.

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“…These advantages favor the use of SERS for detection of different contaminants, such as antibiotics, bacteria, explosive materials, synthetic food colorants, pesticides, and others . Nanoparticles of gold and silver are typical active supports for the SERS due to their superior physical/chemical properties (plasmonic surface effects) and simple fabrication .…”

Section: Introductionmentioning

confidence: 99%

“…SERS technique is based on strong enhancement of Raman scattering from a rough metal surface, providing the characteristic "fingerprint" of desirable substances with high degree of sensitivity at ultralow concentration. 7,8 These advantages favor the use of SERS for detection of different contaminants, such as antibiotics, 8 bacteria, 9,10 explosive materials, 11 synthetic food colorants, 12,13 pesticides, 14 and others. 15 Nanoparticles of gold and silver are typical active supports for the SERS 8,16 due to their superior physical/chemical properties (plasmonic surface effects) and simple fabrication.…”

Section: Introductionmentioning

confidence: 99%

Silver‐based surface enhanced Raman spectroscopy devices for detection of organophosphorus pesticides traces

Soares

2019

Biotechnology Progress

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The detection of traces of substances by surface‐sensitive techniques such as surface enhanced Raman spectroscopy (SERS) explores the interaction of adsorbed molecules on plasmonic surfaces to improve the limit of detection of analytes. This article is an overview about recent development in SERS substrates applied in the detection of organophosphorus pesticides on plasmonic surfaces (arrays of metal nanoparticles). The morphology, roughness, chemical functionalization degree, and aggregation level of plasmonic centers are some of the critical parameters to be controlled in the optimization of SERS signal from specific analytes.

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Evaluation of selected SERS substrates for trace detection of explosive materials using portable Raman systems

Cited by 48 publications

References 40 publications

Revisiting semicontinuous silver films as surface-enhanced Raman spectroscopy substrates

Revisiting semicontinuous silver films as surface-enhanced Raman spectroscopy substrates

Fabrication of nano/microstructures for SERS substrates using an electrochemical method

Silver‐based surface enhanced Raman spectroscopy devices for detection of organophosphorus pesticides traces

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