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Experimental apparatus for monitoring laser ablated nano structure in real time

A laser ablation and nanostructure technology, applied in laser welding equipment, material analysis using measurement of secondary emissions, manufacturing tools, etc., can solve problems such as inability to adjust the distance between the liquid level and the target surface, difficult experiments, and time-consuming

Inactive Publication Date: 2018-02-16
QINGDAO R & D INST XIAN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following defects so far: 1) the preparation of nanostructures by laser liquid phase ablation is difficult to observe during the experiment; 3) The liquid absorbs the laser energy during the preparation process, resulting in unstable energy received by the target, and the existing technology cannot adjust the distance between the liquid surface and the target surface; The target is tested, and multiple targets cannot be continuously ablated; 5) The prepared sample needs to be manually prepared into a TEM sample, which is not only time-consuming but also causes the sample to be polluted or oxidized in the air; 6) Prepare the TEM sample It is difficult to perform in situ experiments after being observed by TEM, and it is difficult to perform experiments again

Method used

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  • Experimental apparatus for monitoring laser ablated nano structure in real time
  • Experimental apparatus for monitoring laser ablated nano structure in real time
  • Experimental apparatus for monitoring laser ablated nano structure in real time

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Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1As shown, an experimental device for real-time monitoring of laser ablation of nanostructures consists of a laser (1), an ablation optical path (2), an ablation chamber (3), a vacuum drying chamber (4), and a TEM observation chamber (5) , a sample generation device (6), and a TEM sample transport system (7), the ablation chamber (3), the vacuum drying chamber (4), and the TEM observation chamber (5) are connected by a vacuum valve, and it is characterized in that the ablation The chamber has a first camera, and the vacuum drying chamber has a second camera, which can monitor experimental phenomena in real time; the laser is a triple-frequency solid-state laser that can emit continuous laser light at 1064nm, 532nm, and 355nm; the ablation optical path (2) has a beam splitter (201 ), a vibrating mirror (202), a mask (203), an adjustable lens (204); the ablation chamber is equipped with a first air inlet pipeline (301), a first air outlet pipeline (302), an...

Embodiment 2

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

[0037] Prepare an ablation solution, the ablation solution is deionized water, a solution containing a surfactant or a colloid to be ablated, and the ablation solution is added to the ablation pool;

[0038] To 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 cylinder surface of the target turning device, open the ablation chamber, Install the ablation pool on the bottom surface of the ablation chamber and fix it;

[0039] 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 abl...

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Abstract

The invention discloses an experimental apparatus for monitoring a laser ablated nano structure in real time. The whole experiment process can be controlled by a computer at a time, and the experimentcan be monitored and recorded. The experimental apparatus is composed of a laser, an ablation optical path, an ablation cavity, a vacuum drying cavity, a TEM observation cavity, a target material control system, and a TEM sample delivering system. The experimental apparatus can automatically control the process of an experiment; the efficiency is high, the control is precise, the sample will notbe polluted and oxidized, and the experiment can be carried out in-situ.

Description

technical field [0001] The invention relates to the field of preparing nanometer materials by laser liquid phase ablation, and in particular to an experimental device for real-time monitoring of laser ablation nanostructures. 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 technological and living devices...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/22B23K26/36
Inventor 徐甄真张建勋李增辉李耀鹏
Owner QINGDAO R & D INST XIAN JIAOTONG UNIV