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Experiment device for experiment for preparing nano-structure through laser ablation

A laser ablation and nanostructure technology, applied in laser welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of lack of uniformity, difficulty in re-experimentation, unstable target energy, etc., and achieve uniform equipment. Effect

Active Publication Date: 2017-08-22
YUHUAN JINGHUA GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far there are the following defects: 1) The equipment for preparing nanostructures by laser liquid phase ablation is different all over the world, which leads to large fluctuations in laser parameters, and the preparation parameter characterization between different laboratories is not uniform 2) Existing technology generally can only use one laser mode for testing, and cannot select different laser modes; 3) The liquid absorbs laser energy during the preparation process, resulting in unstable energy received by the target. None of the existing technologies can adjust the distance between the liquid surface and the target surface; 4) The existing preparation equipment can only test one target material, and cannot continuously ablate multiple targets; 5) The samples after preparation need to be prepared manually TEM sample, which is not only time-consuming but also causes the sample to be polluted or oxidized in the air; 6) It is difficult to carry out in-situ experiments after the prepared TEM samples are observed by the TEM, and it is difficult to conduct experiments again

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  • Experiment device for experiment for preparing nano-structure through laser ablation
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  • Experiment device for experiment for preparing nano-structure through laser ablation

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Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, an experimental device for laser ablation to prepare nanostructure experiments is composed of laser, ablation optical path, ablation chamber, vacuum drying chamber, TEM observation chamber, target control system, and TEM sample transportation system. Its characteristics The reason is that the laser is a triple-frequency solid-state laser that can emit continuous laser light at 1064nm, 532nm, and 355nm; the ablation optical path has an optical path selector, a beam splitter, a vibrating mirror, a beam combining device, and an adjustable lens; Gas pipeline, first gas outlet pipeline, first vacuum pump; vacuum drying chamber with second gas outlet pipeline, second vacuum pump, molecular pump, drying device; TEM observation chamber with transmission electron microscope to observe ablation samples; sample generation The device has an ablation pool and a target control system. The ablation pool is filled with ablation fluid. The target control syste...

Embodiment 2

[0036] A method for performing a laser liquid phase ablation test using the above experimental device. Include the following steps:

[0037] Step 1: Prepare an ablation solution, which is one of deionized water, a solution containing a surfactant, or a colloid to be ablated, and add the ablation solution to the ablation pool;

[0038] Step 2: Prepare the ablation target. After polishing the surface of the target to be ablated, ultrasonically clean it in acetone, ethanol, and deionized water successively. Install the target on the polygonal surface of the target turning device. Etching chamber, the ablation pool is installed on the bottom surface of the ablation chamber and fixed;

[0039] Step 3: Set the movement path of the target in the control computer as rotation, the flipping sequence is clockwise rotation, the flipping time parameter flips one side every 10 minutes, set the working parameters of the laser: 1064nm, 10W, and select the ablation mode: Continuous ablation;...

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Abstract

The invention discloses an experiment device for an experiment for preparing a nano-structure through laser ablation. The overall experiment process can be carried out at a time through computer control. The experiment device is formed by a laser device, an ablation light path, an ablation cavity, a vacuum drying cavity, a TEM observing cavity, a target material control system and a TEM sample transporting system; and implementation of the experiment can be automatically controlled, efficiency is high, control is accurate, samples are prevented from being polluted and oxidized, and on-site experiments can be made.

Description

technical field [0001] The invention relates to the field of preparing nanometer materials by laser liquid phase ablation method, and in particular relates to an experimental device for the experiment of preparing nanostructures by laser ablation. Background technique [0002] Materials, energy and information are recognized as the three pillars of modern civilization, supporting the development of modern civilization. The discovery and preparation of new materials continue to promote the development of science, the advancement of technology and the improvement of people's living standards. The introduction of the concept of nanomaterials and the development of nanotechnology have made materials more and more extensive and far-reaching in the development of human civilization and people's daily life. Various novel phenomena emerging in the research of nanomaterials enrich the treasure house of human knowledge. The widespread use of nanomaterials has made various technologi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/362B23K26/40
CPCB23K26/361B23K26/40
Inventor 徐甄真张龙李增辉李耀鹏
Owner YUHUAN JINGHUA GROUP