Bidirectional curved surface core optical fiber micro-particle rotator

A technology of tiny particles and curved surfaces, applied in cladding optical fiber, radiation/particle processing, optical waveguide and light guide, etc., can solve the problems of difficult movement, high cost, and large volume of laser optical tweezers, and achieve easy assembly, low price, small size effect

Inactive Publication Date: 2011-09-14
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively large size of the laser optical tweezers, it is not easy to move, and the cost is high. We propose a bidirectional curved surface core fiber for driving

Method used

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  • Bidirectional curved surface core optical fiber micro-particle rotator
  • Bidirectional curved surface core optical fiber micro-particle rotator
  • Bidirectional curved surface core optical fiber micro-particle rotator

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Embodiment Construction

[0030] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0031] combine figure 1 , 2 As shown, the first embodiment of the present invention is composed of two curved-surface single-core optical fibers 1 and tiny particles 2. The opposite ends of the two curved-surface optical fibers are respectively connected to light sources, and light is injected into the two curved-surface core optical fibers. The two bent single-core optical fibers are symmetrically arranged and have the same bending arc, and the tiny particles are located at the symmetrical centers of the two bent single-core optical fibers. Simultaneously combine Figure 5-1 to Figure 5-4 , the upper body of the tiny particle is a cylinder made of a material with a lower density, and the bottom is a helical shape with multiple wings made of a material with a higher density. Because of the structure of the curved surface single-core optical fiber, the transmitt...

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Abstract

The invention provides a bidirectional curved surface core optical fiber micro-particle rotator, which comprises two curved single-core optical fibers and micro-particles, wherein the curved single-core optical fibers are single-core optical fibers which can make an evanescent field on the surfaces of fiber cores transmit a cladding and of which the fiber cores on curved parts at least are close to the surface of the cladding; opposite ends of the two curved optical fibers are connected with a light source respectively; the two curved single-core optical fibers are symmetrically arranged and have the same curved radian; the micro-particles are positioned at a symmetrically central position of the two curved single-core optical fibers; and the micro-particles have a cylindrical upper body which is made of low-density materials and a helical bottom which is made of high-density materials and is provided with a plurality of wings. The invention has the advantages that: the rotator is small in volume, light in weight, simple in structure, low in cost, easy to operate, easy to package and fix, and the like, and the rotator is conveniently and manually operated. Moreover, the phenomenon of burning the micro-particles due to over-high power and the damage to solvent activity due to direct contact can be avoided, and the rotator has a wide application prospect in fields of biology and chemistry.

Description

technical field [0001] The invention relates to a tiny particle rotator, in particular to a tiny particle rotator based on bidirectional curved surface core optical fiber. The evanescent field of the curved surface-core fiber and the curved-polished fiber is used to generate light radiation pressure to drive tiny particles to rotate. 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. Spinners composed of tiny particles play a vital role as agitators in microfluidic systems, so the design and preparation of tiny particle spinners is becoming more and more important. In order to obtain higher performance rotators, people began to use light drives. [0003] Light has linear momentum that produces radiation pressure. Under certain conditions, light also carries angular momentum, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/26G02B6/02G21K1/00
Inventor 苑立波毕思思
Owner HARBIN ENG UNIV
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