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Photo-thermal booster based on porous optical fiber

A technology of a holey fiber and a booster, which is applied to the components, instruments, optics, etc. of the pumping device for elastic fluid, and can solve the problems of unused and photothermal effect characteristics of the fiber.

Inactive Publication Date: 2020-09-08
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Photo-thermal booster based on porous optical fiber
  • Photo-thermal booster based on porous optical fiber
  • Photo-thermal booster based on porous optical fiber

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Embodiment Construction

[0051] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0052] figure 1 The cross-sectional structure diagram of the holey fiber is shown, and the holey fiber is composed of a cladding, a core with a refractive index slightly higher than that of the cladding material, and an air hole structure that can enter the microfluid.

[0053] figure 2 It shows that the holey fiber is processed and prepared into a structure similar to a jet pump, wherein one end of the holey fiber is thinned by heating and shrinking until the air hole of the fiber is sealed to form a solid single-core fiber end 2-1, which is used as a connection with the outside Optical interface for interconnecting light sources. After one end is sealed, a nearly spherical heating chamber 2-2 is prepared by means of air pressurization and heating. The cladding between the air holes in the heating chamber expands and becomes thinner until t...

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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...

Claims

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Application Information

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IPC IPC(8): F04B13/00F04B53/00F04B17/00G02B6/032
CPCF04B13/00F04B17/00F04B53/00G02B6/032
Inventor 苑婷婷张晓彤苑立波
Owner GUILIN UNIV OF ELECTRONIC TECH
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