A substrate for infrared spectroscopy

Abstract

The invention provides a substrate used for an infrared spectroscopy. The structure of the substrate comprises a window layer and a supporting base, wherein the window layer is positioned above the supporting base, and selectively uses a two-dimensional material with the thickness of a single atom to 1000 atoms; the transverse section of the supporting base is in the shape of a circle, an ellipse, a triangle, a square, a rectangle, a pentagonal structure, a regular hexagon or an octagon; the geometrical dimensions of the supporting base are 500 microns * 5 cm, and the thickness of the supporting base is 1 micron to 5 cm; a plurality of through hole structures are formed in the supporting base, the through holes are arranged in an array manner, the center of the through hole array is fundamentally coincident with the geometrical center of the base, and the spacing between the through holes is 1 micron to 4 cm; an overhead window layer is formed at the window layer part corresponding to the through holes; and the two-dimensional material is selected from graphene, molybdenum disulfide, boron nitride, MX2 and black phosphorus.

Description

technical field [0001] The invention relates to the technical field of infrared light detection, in particular to a substrate for infrared spectroscopy and a preparation method. Background technique [0002] Infrared spectroscopy is a technology and method that directly detects molecular vibration modes to realize characteristic identification and quantitative analysis of substances. This technology has the advantages of high "fingerprint" characteristics, no need for sample labeling, fast response speed, the highest instrument penetration rate, and the most complete spectral library, etc. It is a powerful tool and an indispensable means to determine molecular composition, conformation and structural change information , Has been widely used in environmental monitoring, food safety testing, chemical composition analysis, explosives detection and biomedical treatment and other important fields related to the national economy and the people's livelihood and the lifeline of the...

AI Technical Summary

Problems solved by technology

In practical applications, different window substrates will be selected in different measurement bands, which will bring inconvenience to the experimenter; even in the light transmission band, it is difficult for these materials to achieve a light transmittance of more than 97% due to the influence of refraction factors

In addition, these commonly used infrared window materials also have certain problems, such as NaCl and KBr are easy to dissolve in water, paraffin itself has strong infrared absorption activity, BaF 2 High brittleness, expensive Diamond, etc.

These problems have brought many difficulties to the realization of simple, fast and accurate infrared spectrum measurement.

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