Manufacture method of raman spectrum test piece and raman spectrum test method

A technology of Raman spectroscopy and a manufacturing method, which is applied in the field of Raman spectroscopy testing and Raman spectroscopy test piece fabrication, can solve the problems of difficult preprocessing of optical fiber processing, slowing down the practical process, etc., and achieves low cost and simple and easy process. , The effect of strong anti-interference ability

Inactive Publication Date: 2013-06-26
FUZHOU PHOTOP QPTICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing solutions often have problems such as difficult fiber processing or the need for pretreatment, which greatly slows down the practical application of this technology.

Method used

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  • Manufacture method of raman spectrum test piece and raman spectrum test method
  • Manufacture method of raman spectrum test piece and raman spectrum test method
  • Manufacture method of raman spectrum test piece and raman spectrum test method

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] like figure 1 and 2 Shown is the Raman spectroscopic test piece of the present invention and a schematic diagram of its production process. The miniature plastic or glass box made by injection molding technology can be mass-produced at low cost, and the connection between each box is designed to be tool-free. In the form, there is a layer of Raman spectroscopy detection layer at the bottom of the box, and the detection layer contains nano-metal particles with an inert shell. The long-range effect of the strong electromagnetic field enhancement of the nano-metal particles is used to enhance the excitation effect of the excitation light on the measured substance; and the inert shell is a chemically inert material, which can ensure that the Raman signal light of the measured molecule is really from the measured substance The substrate, ra...

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Abstract

The invention discloses a manufacture method of a raman spectrum test piece. The manufacture method comprises the following steps of: pouring solution containing metal nanoparticles and SiO2 aerosol into a box body by utilizing the injection molding process, wherein the box body is formed in an open mold pressing way; and then forming a raman detection layer at the bottom part of the box body by the volatilized solution. The method is simple in process, low in cost and capable of realizing massive production. The invention also discloses a raman spectrum test method adopting the test piece. The raman spectrum test method comprises the following steps of: pouring liquid to be detected into a test piece box body; radiating an exciting light to the test piece through an optical fiber collimator and a lens, wherein the raman detection layer on the test piece can improve the exciting function of the exciting light to the liquid to be detected; and finally transmitting a raman signal light emitted by the liquid to be detected into a raman spectrometer through the lens and the optical fiber collimator. The method is simple and easy to carry out, high in interference resistance and high in flexibility, and is suitable for being applied to online analysis, real-time detection, detection of trace poisonous and harmful substances, etc.

Description

technical field [0001] The invention relates to the field of Raman spectrum detection, in particular to a method for making a Raman spectrum test piece and a Raman spectrum test method using the test piece. Background technique [0002] In recent years, melamine, Sudan red and other incidents have exposed huge loopholes in the field of food safety, and the lives and health of the public have been seriously threatened. The detection of low-concentration trace substances has become a research hotspot in food safety testing. Compared with other spectra, Raman spectroscopy can provide rich molecular structure and molecular vibration information, so it has become a powerful tool for material analysis and material identification. However, the Raman scattering cross section is usually in the 10 -30 This is only one thousandth of Rayleigh scattering, and it is very easy to be submerged in the fluorescence background noise, which greatly limits the application of Raman spectrosc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
Inventor 吴砺林江铭林志强任策刘鸿飞
Owner FUZHOU PHOTOP QPTICS CO LTD
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