Surface-enhanced Raman substrate of ground glass, and preparation method thereof

Abstract

The invention discloses a surface-enhanced Raman substrate (SERS) of ground glass, and a preparation method thereof. The SERS comprises a base layer and a surface-enhanced layer. The surface-enhanced layer is adhered on the ground surface of the ground glass. With the method, a noble metal surface-enhanced layer is directly formed on the ground glass having a roughness with a micron order of magnitude; no etching surface is necessary to be formed on the base layer; the noble metal layer is not necessary to be roughed; and the formed substrate has extremely good enhanced effect and ultra-high analytical sensitivity. The SERS is suitable for the detection of ultra trace samples. The most prominent is that the SERS is simple in preparation, short in production period and relatively low in cost, is suitable for large-scale production, and provides conditions for promoting wider applications of the SERS technology in the fields of homeland security, environmental monitoring, food security, health care, etc.

Description

Technical field [0001] The invention relates to the field of molecular spectrum analysis and detection, in particular to a substrate for surface enhanced Raman scattering and a preparation method thereof. Background technique [0002] Light irradiates the material to cause elastic scattering and inelastic scattering. The scattered light of elastic scattering is the same component as the excitation light wavelength, and the scattered light of inelastic scattering has longer and shorter components than the excitation light wavelength, which is called Raman Effect, the obtained spectrum is called Raman spectrum. Raman spectroscopy belongs to molecular vibration spectroscopy, which is the fingerprint of material molecules. Raman spectrometers made according to the Raman effect can be used to accurately and qualitatively identify samples. The analysis method of Raman spectroscopy generally does not require pre-processing of samples, and is easy to operate during the analysis process,...

AI Technical Summary

Problems solved by technology

However, the above-mentioned structure of the prior art needs to be etched on the surface of the solid base material to form a base layer, and then grow the matrix, which has the disadvantages of high cost, long production cycle, and difficulty in adapting to mass production; and the solid base material is relatively hard and brittle, easy to Damaged, does not have the characteristics of adapting to the orientation according to the environmental conditions when used

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