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LSPR sensor device based on Ag nano particles

A sensor device, nanoparticle technology, applied in the field of sensors, can solve the problem of no SPR instrument and so on

Inactive Publication Date: 2016-07-27
ZHONGSHAN HOUYUAN ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no widely used commercial SPR instrument in China

Method used

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  • LSPR sensor device based on Ag nano particles

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Embodiment

[0022] An LSPR sensor device based on Ag nanoparticles, consisting of a compact optical path and a circuit, the compact optical path adopts a detection method of a resonance angle optical signal, which includes a laser source 1, a polarizer 2, a vibrating mirror 3, a lens group 4, a reflector Mirror 5, hemispherical column prism 6 and sample cell 7; Described circuit is made up of photodetector 9, photoelectric conversion circuit 10, micropump drive circuit 11, vibrating mirror drive circuit 12, data acquisition card 13 and computer 14, and described laser After passing through the polarizer, the P polarized light is incident on the vibrating mirror 3, the vibrating mirror 3 changes the angle of the reflected light by rotating, and the reflected light is converged by the lens group 4. According to the lens imaging relationship, the vibrating mirror 3 (rotation center) is set to At the object space 2L of the lens, its image will converge at the image space 2L'. Place reflector ...

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Abstract

The invention discloses an LSPR sensor device based on Ag nanoparticles, which is composed of a compact optical path and a circuit, and the compact optical path adopts a detection method of a resonance angle optical signal, which includes a laser source, a polarizer, a vibrating mirror, a lens group, a reflecting mirror, Hemispherical prism and sample cell; the circuit is composed of photodetector, photoelectric conversion circuit, micropump drive circuit, galvanometer drive circuit, data acquisition card and computer. The angle of the reflected light is changed by rotation, the reflected light is converged by the lens group, and the converged light is reflected to the hemispherical prism through the mirror. When the surface plasmon resonance effect occurs, the light emitted to the photodetector shows a change in strength , through the photoelectric conversion circuit to convert the electrical signal to the computer, the micropump drive circuit controls the sample cell through the linear motor; to realize the sample pumping and pumping out, the photoelectric conversion circuit is connected to the galvanometer through the galvanometer drive circuit.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to an LSPR sensor device based on Ag nanoparticles. Background technique [0002] Food safety is a major issue related to people's health and national economy and people's livelihood. In recent years, food safety accidents caused by excessive levels of toxic and harmful chemicals (such as clenbuterol, pesticides, veterinary drugs, biological toxins, etc.) in food are not uncommon. It has attracted great attention from relevant state departments, and strengthening the supervision and management of food safety has become one of the important tasks of governments at all levels. There are many types and components, and the content of the target object that needs to be detected is very low. Traditional detection instruments such as gas chromatography and liquid chromatography are expensive, have complicated sample processing steps, long detection cycles, and high costs, which are diffi...

Claims

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Application Information

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IPC IPC(8): G01N21/552
CPCG01N21/553
Inventor 朱雪亭黄考干李旺和
Owner ZHONGSHAN HOUYUAN ELECTRONICS TECH CO LTD
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