Real-time controllable micro-droplet jetting device and method based on lithium niobate crystal

A technology of micro-droplets and lithium niobate, which is applied to devices and coatings for coating liquid on the surface, can solve the problems of high cost, complex core chip structure, and strict physical properties of the droplets to be sprayed, and achieve the spraying speed. Controllable, low production process and production cost, and simple device structure

Inactive Publication Date: 2016-09-07
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing micro-droplet ejection method has the disadvantages of complex core chip structure, high cost, str

Method used

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  • Real-time controllable micro-droplet jetting device and method based on lithium niobate crystal
  • Real-time controllable micro-droplet jetting device and method based on lithium niobate crystal
  • Real-time controllable micro-droplet jetting device and method based on lithium niobate crystal

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] Using a 405nm laser, the laser power is 7.0mW, the background light source is a halogen lamp, the magnification of the focusing objective lens is 25 times, the diameter of the focusing spot is 15μm, and the volume of the liquid droplet (deionized water) to be sprayed is 0.1μL. By adjusting the transparent microchip The translation stage makes the focused light spot hit the micro-droplet, and the injection speed is 0.01μL / s.

example 2

[0035] Using a 405nm laser, the laser power is 17mW, the background light source is a high-power white LED lamp, the magnification of the focusing objective lens is 25 times, the diameter of the focusing spot is 14μm, and the volume of the liquid droplet (alcohol) to be sprayed is 0.2μL. By adjusting the transparent microchip The translation stage makes the focused light spot hit the micro-droplet, and the injection speed is 0.03μL / s.

example 3

[0037] Use a 405nm laser, the laser power is 17mW, the background light source is a halogen lamp, the magnification of the focusing objective lens is 25 times, the diameter of the focusing spot is 20μm, and the volume of the liquid droplet (saline) to be sprayed is 1.0μL. Make the focused light spot hit the micro-droplet, and the jetting speed is 0.03 μL / s.

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Abstract

The invention discloses a real-time controllable micro-droplet jetting device and method based on a lithium niobate crystal. The device comprises a laser device 1, a diaphragm 2, a circular adjustable attenuator 3, an optical reshaper 4, an equal-ratio optical splitter 5, a light intensity detector 6, a background light source 7, a lithium niobate chip 8, a transparent final motion chip horizontal movement platform 9, a focusing objective lens 10, a semi-transparent and semi-reflective mirror 11, a first-stage optical filter 12, a second-stage optical filter 13, a CCD camera 14 and a rigidity support 15. The real-time controllable micro-droplet jetting device is composed of a micro-droplet jetting optical path, a real-time observation optical path and a light intensity detection optical path, and the lithium niobate chip 8 and the transparent final motion chip horizontal movement platform 9 are core devices of the micro-droplet jetting device. Jetting of polarity droplets can be achieved through the simple device, and the jetting speed of the jetting device can be controlled. The technology can be used for mixing and separating of a trace of reagents and is of important significance in the fields such as biological and medical care, medicine diagnosis, food sanitation, environment monitoring and molecular biology.

Description

technical field [0001] The invention relates to a micro-droplet control technology, in particular to a real-time controllable micro-droplet ejection device and method based on lithium niobate crystals Background technique [0002] With the rapid development of microfluidic chips, more and more attention has been paid to the control technology of micro-droplets. Micro-droplet control technology is generally used in the analysis process of micro-sample in the fields of biology, chemistry, pharmacy, etc. It mainly involves the mixing and transportation of micro-quantity reagents. As one of the important components of micro-droplet manipulation technology, micro-droplet jetting technology has an important impact on the mixing and separation of trace reagents. development is of great importance. [0003] The ejection of micro-droplets refers to the process in which the micro-droplets to be ejected are locally driven by external forces to overcome the surface tension and rapidly...

Claims

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Application Information

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IPC IPC(8): B05C5/00B05C5/02B05C11/10
Inventor 樊博麟阎文博陈立品陈洪建李少北王旭亮张羽晴李菲菲
Owner HEBEI UNIV OF TECH
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