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Method for constructing 3D micro-nano channel structure through laser direct-writing technology

A laser direct writing, channel structure technology, applied in 3D object support structure, additive manufacturing, processing material handling, etc., can solve the problems of fineness limitation, inability to obtain topological hollow structure, complicated process, etc., to achieve simple equipment and mechanical strength. And the effect of excellent mechanical properties and high structural construction efficiency

Active Publication Date: 2020-01-03
广州华速信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technologies that can realize 3D printing channel structures have great limitations in fineness, cannot obtain topological hollow structures at the nanometer level or even in the range of several microns, and the process is cumbersome and can only be applied to limited printing materials.

Method used

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  • Method for constructing 3D micro-nano channel structure through laser direct-writing technology
  • Method for constructing 3D micro-nano channel structure through laser direct-writing technology
  • Method for constructing 3D micro-nano channel structure through laser direct-writing technology

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Experimental program
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Effect test

Embodiment 1

[0031] A method for constructing a 3D micro-nano channel structure using laser direct writing technology, comprising the steps of:

[0032] (1) Preparation of hydrogel base flexible material: 3.5g of sodium acrylate, 1g of acrylamide, 3mg of N,N'-methylenebisacrylamide, 8mL of 2M sodium chloride, 2mL of 10x PBS, 3.5mL of pure Mix well with water; then take 1 mL of the above mixed solution, mix it with 20 μL of 10% (v / v) tetramethylethylenediamine, 20 μL of 10% (w / v) ammonium persulfate, and place it at 37°C for reaction 1 hour into a gel, and placed in pure water to expand to several times the volume;

[0033] (2) Cut the hydrogel swelled in step (1) into square blocks with a side length of 2 cm, and place them in Fluorescein-NH at a concentration of 500 μM 2 oIn the solution for 1 hour, so that the dye completely penetrates into the interior of the hydrogel;

[0034] (3) Prepare the model file of the structural region where different materials are combined by drawing softwa...

Embodiment 2

[0041]A method for constructing a 3D micro-nano channel structure using laser direct writing technology, comprising the steps of:

[0042] (1) Preparation of hydrogel base flexible material: 4g sodium acrylate, 1g acrylamide, 1.5mg N,N'-methylenebisacrylamide, 8mL of 2M sodium chloride, 2mL of 10xPBS, 3.5mL of pure water Mix well; then take 1 mL of the above mixed solution, mix it with 20 μL of 10% (v / v) tetramethylethylenediamine, 20 μL of 10% (w / v) ammonium persulfate, and place it at 37°C for 1 Hours into a gel, and placed in pure water to expand to several times the volume;

[0043] (2) Cut the hydrogel expanded in step (1) into a square block with a side length of 2 cm, and place it in a Fluorescein-azide solution with a concentration of 1 mM for 1 hour, so that the dye can completely penetrate into the interior of the hydrogel;

[0044] (3) Prepare the model file of the structural region where different materials are combined by drawing software, and import it into the ...

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Abstract

The invention belongs to the field of 3D micro-manufacturing, and relates to a method for constructing a 3D micro-nano channel structure through a laser direct-writing technology. The preparation method comprises the steps: hydrogel serves as a scaffold, and a 3D structure is constructed through the two-photon laser direct-writing technology; hydrophobic macromolecules are connected to the constructed microstructure, and oily components are loaded into the constructed microstructure; and after isotropic shrinkage and dehydration, the oily components are removed through a detergent, and thus the hollow network structure capable of reaching the nanoscale is obtained. Through the method, ordered micro-nano hole channels with the fineness of dozens of nanometers can be constructed, and the 3Dmicro-nano channel structure has great potential in the field of optoelectronic device, nano element and sensor development, biomedicine and the like.

Description

technical field [0001] The invention belongs to the technical field of 3D micro-manufacturing, and in particular relates to a method for constructing a 3D micro-nano channel structure by using laser direct writing technology. Background technique: [0002] As an important advanced manufacturing technology, laser direct writing technology has been widely used in various industrial manufacturing fields. When laser direct writing technology is used for material processing, the processing resolution it can achieve has been limited by the diffraction limit of classical optical theory, and it is difficult to process at the nanometer scale. Among them, as a new laser processing technology, multi-photon femtosecond pulse laser processing can obtain micro-nano scale processing resolution in an ultra-fast process, and has been used to develop advanced micro-nano processing technology, and has become an international leader in recent years. Research hotspots. [0003] Two-photon poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/135B29C64/307B29C64/379B29C67/20B33Y10/00B33Y30/00B33Y70/00
CPCB29C64/135B29C64/307B29C64/379B29C67/202B33Y10/00B33Y30/00B33Y70/00
Inventor 吴苏州杨高洁李晓云
Owner 广州华速信息技术有限公司
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