Microfluid tunable optical filter based on PDMS (Polydimethylsiloxane) chip and manufacture method thereof

Abstract

The invention relates to a microfluid tunable optical filter based on a PDMS (Polydimethylsiloxane) chip and a manufacture method thereof. The microfluid tunable optical filter comprises a spontaneous radiation light source, a PDMS microfluid chip with double microchannels, a spectrograph and two groups of injection pumps working independently, wherein the light incident end and the light emergent end of the microfluid chip are respectively connected with the spontaneous radiation light source and the spectrograph by coupling optical fibers respectively, a first fluid injection end and a second fluid injection end of the microfluid chip are respectively connected with two groups of injection pumps working independently; when a fluid is injected in a T-shaped channel structure, the required fluid injection pressure is low, the liquid is difficult to splash and the performance is stable; two kinds of fluids are diffused and mixed in a horizontal channel, the longitudinal liquid refractive index gradient is obvious and the sensitivity is high; and the microfluid tunable optical filter can be integrated in an optical flowing control chip, can be conveniently applied to sampling in real-time biological and environment monitoring without influencing observation and recording of an interference curve, and is beneficial to laminar stability to obtain stable signals.

Description

technical field [0001] The invention relates to a device and a method in the technical field of optical equipment, in particular to a microfluid tunable optical filter based on a PDMS (polydimethylsiloxane) chip and a manufacturing method thereof. Background technique [0002] Optofluidics is the crystallization of optics and microfluidics. Compared with traditional solid-state devices, microfluidic optical devices have the advantages of miniaturization, tuning diversity, and integration, so microfluidic devices are also called optical chips or labs on a chip (Lab on a chip). Its micro-analysis system uses very little sample reagent, high resolution and sensitivity, low cost, and short analysis time, and can be widely used in chemical, biological, and medical detection and analysis, as well as optical and information processing. The microfluidic optical chip can use certain biochemical components as the basic unit and optical information as the carrier to detect the target ...

AI Technical Summary

Problems solved by technology

However, the design of the structure is cumbersome, dye droplets need to be used, high-voltage electrodes are used for electric drive, and the electrode fabrication process on the chip is complicated, so it is not suitable for integration in microfluidic chips.

Images