Light fluid chip light field polarization distribution detection method based on gold nano-rod colloid

Abstract

The invention discloses a light fluid chip light field polarization distribution detection method based on a gold nanometer rod colloid. The light fluid chip light field polarization distribution detection method comprises: 1) preparing a gold colloid and gold nano-rods, preparing a light fluid chip, and establishing a test platform; 2) selecting an appropriate laser wavelength, an appropriate incidence angle and an appropriate polarization mode, and selecting laser as a light source, wherein the laser beam output from a laser device is incident on a sample, and the working wavelength of the laser device is selected within visible light and infrared light ranges; 3) fixing white light polarization, and changing a laser polarization direction for capturing the nano-rods, wherein the included angle between the laser polarization direction and a white light polarization direction is changed; and 4) maintain the laser direction at a unchanged stage, opening the light fluid chip after the solution is evaporated, and measuring a SEM image. According to the present invention, the detection method is suitable for the light fluid chip polarization property detection, and has advantages of instrument miniaturization, simple instrument operation, simple design, convenient operation, significant phenomenon, short time consumption, strong verification, and precise measurement.

Description

technical field [0001] The invention relates to a method for detecting the light field polarization distribution of an optofluid chip based on gold nanorod colloids, and belongs to the technical field of optofluid and nanoscale detection. Background technique [0002] With the continuous intersection and integration of nanotechnology, microprocessing technology, life science and other disciplines, optofluidics and chip technology with optofluidics as the core have received more and more attention and applications. [0003] Optofluidic technology can be understood as the combination of light and fluid on a microscale, using light to monitor the properties of fluids and using fluids to control the adjustability of photonic instruments. For specific applications such as surface Raman enhanced detection, the application of microfluidics can significantly reduce the amount of samples used, and improve the accuracy and sensitivity of detection. [0004] Optofluidic technology can...

AI Technical Summary

Problems solved by technology

However, on the other hand, unlike the precisely designed optical waveguide structure, its design is limited by processing technology, microfluidic technology, etc., which makes its structure complex and diverse.

In view of this situation, it is impossible to analyze the light field distribution and even the polarization characteristics analytically, and it is very complicated to analyze the polarization characteristics of the light field by means of numerical analysis by establishing a model.

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