Micro stirrer driven by a multi-core fiber

Abstract

The invention provides a micro stirrer driven by a multi-core fiber, comprising a pyramidal multi-core fiber made of a section of multi-core fibers via fused biconical taper and small particles made from composite materials, wherein the small particles are located at the pyramidal end of the pyramidal multi-core fiber; the non-pyramidal end of the pyramidal multi-core fiber is connected with a light source; a plurality of fiber core emergent lights of the pyramidal multi-core fiber simultaneously act on the small particles in a vertical suspension liquid; the upper body of each small particleis a sphere and a rotating shaft which are made from materials with lower density; and the bottom of the each small particle is of a windmill-shaped structure with a plurality of wings made from materials with higher density. The micro stirrer provided by the invention has the characteristics of small volume, light weight, simple structure, low price, easiness in operation, high mixing efficiency, benefit of the reduction of reagents, and the like and can be widely applied to the fields of biology and chemistry.

Description

technical field [0001] The invention relates to a micro-stirrer, in particular to a micro-stirrer composed of multi-core optical fibers to drive tiny particles. Background technique [0002] In recent years, Micro Total Analysis System (μTAS), also known as a laboratory built on a single chip, has set off a huge wave of research in the fields of medical research, biological application analysis and chemistry. Among them, the micro-stirrer is one of the most important parts for the fastest and most complete mixing of various micro-fluidic samples. Therefore, it is becoming more and more important to design and manufacture micro-stirrers. In general, micro-stirrers can be divided into two categories: passive and active, also known as stationary and rotating. Relying on molecular diffusion and chaotic convection, the passive micro-stirrer has a simple structure, does not require external energy to drive stirring, and is stable. This is also the first reported type of microst...

AI Technical Summary

Problems solved by technology

Due to the relatively large volume of laser optical tweezers, it is not easy to move, and the cost is high. We propose a multi-core optical fiber system for driving.

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