Tiny particle conveying device and method based on hollow melt-embedded core capillary optical fiber

A technology for tiny particles and conveying devices, applied in the optical field, can solve the problems of single method and inflexible operation, and achieve the effect of strong operability and small device structure.

Inactive Publication Date: 2011-08-10
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the waveguide has a single way of transporting tiny particles, and the operation is not flexible enough, etc.

Method used

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  • Tiny particle conveying device and method based on hollow melt-embedded core capillary optical fiber
  • Tiny particle conveying device and method based on hollow melt-embedded core capillary optical fiber
  • Tiny particle conveying device and method based on hollow melt-embedded core capillary optical fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Coupling connection: Take a section of single-core hollow fused-core capillary optical fiber, remove and cut the coating layer of the optical fiber at one end, and then align and weld it with the single-mode optical fiber 10 with light source pigtail; Figure 6 The shown solder joint 11 is heated to a softened state, then tapered, and the optical power is monitored until the optical power coupled to the single-core hollow fused-core capillary fiber reaches the maximum;

[0033] 2. Encapsulation protection: adjust the quartz tube with an inner diameter larger than the standard optical fiber or single-core hollow fused capillary single-core optical fiber to figure 1 Shown at the cone coupling zone 12, then at both ends of the quartz tube with CO 2 The laser is heated, welded and sealed, or encapsulated and cured with epoxy resin, and then secondly coated to complete the overall protection;

[0034]3. Small hole processing: In the middle of the single-core hollow fused...

Embodiment 2

[0037] In the first embodiment, the single-core hollow fused-core fiber can also be replaced by a hollow fused-core capillary fiber whose core geometric distribution is circular distribution, triangular distribution, quadrilateral distribution or other polygonal distribution, such as image 3 , Figure 4 and Figure 5.

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Abstract

The invention provides a tiny particle conveying device and a method based on a hollow melt-embedded core capillary optical fiber. The tiny particle conveying device comprises a section of hollow melt-embedded core capillary optical fiber; the hollow melt-embedded core capillary optical fiber can lead transmission lights in a fiber core to transmit a cladding layer in an evanescent field mode and enter the hollow melt-embedded core capillary optical fiber in a capillary; one side of the middle part of the hollow melt-embedded core capillary optical fiber is provided with a small hole; the small hole is connected with an air pressure adjusting device; one end of the hollow melt-embedded core capillary optical fiber is welded with a section of standard solid optical fiber; and the standard solid optical fiber is connected with the hollow melt-embedded core capillary optical fiber into a whole body by a cone transition region formed by drawing a welding part. The device and the method can be used for screening, transferring, transporting, detecting and the like for tiny particles such as biological molecules, biological cells, nanometer clusters, colloidal particles, media particles and the like.

Description

technical field [0001] The invention belongs to the field of optical technology, and relates to a tiny particle delivery device based on a hollow fused-core capillary optical fiber. The invention also relates to a method for transporting tiny particles based on a hollow fused-core capillary optical fiber. Background technique [0002] With the application of planar photonic structures in microfluidic devices, optical systems based on evanescent field optical trapping and transmission show greater advantages compared to free space systems. Because the manipulation area of ​​the optical system based on evanescent field optical trapping and transport is not limited by the laser spot size, this optical system can be applied to long-distance actuation, and is only limited by the scattering and absorption losses of the system. In addition, with the application of photolithography and etching technology in the manufacture of planar optical devices, large-area trapping regions can ...

Claims

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Application Information

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IPC IPC(8): G02B6/26G02B6/032G21K1/00
Inventor 苑立波邓洪昌田凤军戴强
Owner HARBIN ENG UNIV
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