Micro detection device, and detection method

Abstract

The invention discloses a micro detection device, and a detection method. The micro detection device comprises an excitation light source, a detection probe, a Raman spectrum analyzer, and an opticalfiber circulator which is capable of realizing single way transmission of light along the excitation light source, the detection probe, and the Raman spectrum analyzer; a vacuum chamber, a hollow photonic crystal optical fiber communicated with the vacuum chamber, and a gas pump are arranged in the detection probe; a nanometer structure metal layer is arranged on a cavity internal wall of the hollow photonic crystal optical fiber. The beneficial effects are that: the hollow photonic crystal optical fiber and surface enhanced Raman scattering technology are combined, Raman scattering signals are enhanced greatly, and at the same time, optical fiber is taken as a light transmission medium, an optical fiber device is taken as a light splitting element. The micro detection device is of a all optical fiber structure, is small and portable, is suitable for a plurality of situations, is extremely high in detection sensitivity, is suitable for trace quantity detection and high concentration detection, and is extremely high in efficiency.

Description

technical field [0001] The invention relates to the field of food and drug detection, in particular to a micro detection device and a detection method. Background technique [0002] Food and drug safety is an important issue related to human life and health, people's livelihood and the national economy. In recent years, food and drug safety has become the focus of all sectors of society. Food and drug safety testing is an important means to ensure food and drug safety, and it is of great significance. Especially for the rapid inspection industry, miniaturized rapid inspection equipment with high sensitivity is required to meet the growing demand for food and drug inspection. The existing detection techniques mainly include the following categories: chromatography, mass spectrometry, biochemical methods, spectroscopic techniques, etc. The chromatograph and mass spectrometer systems are relatively complex and are relatively large-scale equipment. They are mainly used in labo...

AI Technical Summary

Problems solved by technology

However, due to the complex optical system, these Raman spectroscopic analysis techniques are rarely used in miniaturized rapid detection equipment, so that the sensitivity of the current miniaturized portable detection equipment is low

Images