Photo-thermal booster based on porous optical fiber

Abstract

The invention provides a photo-thermal booster based on a porous optical fiber. The photo-thermal booster is characterized by consisting of a section of micro-machined porous optical fiber and a lightsource, wherein the porous optical fiber is machined and prepared into a shape similar to an injection pump, a solid single-core optical fiber end is formed at one end of the porous optical fiber, then a nearly spherical heating chamber is prepared through an air pressurizing and heating method, cladding between air holes of the heating chamber expands and becomes thin until being completely hot-melted and disappearing, and a fiber core penetrates through the whole heating chamber and is suspended in the middle. A micro-flow liquid micropore is prepared on the outer surface of the heating chamber by adopting a femtosecond punching processing technology to serve as a liquid inlet, and a Laval nozzle is prepared at an open end by adopting a unilateral hot melting tapering method and is connected with a micro-flow channel in a micro-fluidic chip required to be used. The porous optical fiber photo-thermal booster capable of being used for the micro-fluidic chip is simple to prepare, goodin consistency, convenient to embed in the chip, convenient and fast to connect with the light source, and suitable for large-scale mass production.

Description

[0001] (1) Technical field [0002] The invention relates to a photothermal booster based on a porous optical fiber, which is convenient to embed into a microfluidic chip, and can also replace large-scale sampling equipment such as micro-injection pumps and micro-flow peristaltic pumps in micron-scale operation of micro-liquids. The flow control chip provides a convenient method for high-throughput analysis and detection peripheral control equipment in the fields of chemistry, biology, medicine, etc., and belongs to the field of optofluidic technology. [0003] (2) Background technology [0004] Microfluidics (Microfluidics or Lab-on-a-chip) refers to a system that uses microchannels of tens of microns or hundreds of microns to process or manipulate tiny fluids. After decades of development, microfluidic technology has become an emerging interdisciplinary subject involving chemistry, fluid physics, optics, microelectronics, new materials, biology and biomedical engineering. Du...

AI Technical Summary

Problems solved by technology

[0006] In the above types of microfluidic systems related to optical fibers, the sample liquid often needs to be driven, controlled or performed various operations, and the photothermal effect characteristics in the optical fiber are not used.

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