Research progress of remote detection with ultraviolet Raman spectroscopy

Yuqing, 何玉青 He; Shuai-ying, 魏帅迎 Wei; Yi-xin, 郭一新 Guo; Man, 赵曼 Zhao; Jin, Weiqi; Lin-mao, 任林茂 Ren

doi:10.3788/co.20191206.1249

Cited by 1 publication

(2 citation statements)

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“…Surface-enhanced Raman scattering (SERS) has the ability to amplify the spectral intensity of Raman scattering light, which makes it a powerful tool for detecting trace substances. [1][2][3] Its advantages, including fast detection, non-destructiveness, and strong resistance to interference, have made it popular in various fields, [4][5][6] such as the detecting of pesticide components and contents, food additives, and stress molecules in medical diseases. [7][8][9][10][11][12] Apart from a few SERS substrates based on gold, which exhibit good stability in air, the majority of SERS substrate materials, such as silver (Ag), are prone to oxidation, leading to a reduction in their enhancement effect.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Surface-Enhanced Raman Spectroscopy Substrate Time Stability Improvement Using an External Oxygen Barrier Method

Song,

Li,

Jiang

et al. 2024

Appl Spectrosc

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The poor time stability of surface-enhanced Raman scattering (SERS) substrates greatly limits their application potential. Although core–shell structures are commonly used to enhance stability, their complex preparation processes, high costs, and susceptibility under acidic or alkaline conditions result in serious disadvantages for practical applications. Here, we propose a new method of external oxygen barrier to improve spectral stability, in which SERS substrates are stored in an oxygen-free environment. Controlled experiments are carried out under air and vacuum. Raman spectrum intensity is measured 11 times within six months for each group. Using the attenuation formula, the Raman spectrum intensity decay results of each SERS substrate over time are obtained. The effectiveness of the external oxygen barrier method is demonstrated through curve fitting using the corresponding function. The substrate spectral attenuation rates of the vacuum group and the argon group within six months are <20%, proving the effectiveness of the external oxygen barrier method.

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