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Method for processing high-reflectance material based on metal nanoparticle photothermal effect

A technology of metal nanoparticles and high reflectivity, which is applied in metal processing equipment, metal material coating technology, manufacturing tools, etc., can solve the problems of increasing the overall cost and low fault tolerance rate, so as to improve the absorption rate, improve the processing efficiency, Effect of increasing laser utilization

Inactive Publication Date: 2014-07-23
JIANGSU UNIV
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Problems solved by technology

However, the use of two laser processing systems or the combination of laser system and cutting processing system to complete this process not only greatly increases the overall cost, but also requires additional device control for the time synchronization of the two processing systems, and the fault tolerance rate is low.

Method used

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  • Method for processing high-reflectance material based on metal nanoparticle photothermal effect

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Embodiment Construction

[0018] Take the high reflectivity material copper plate as an example, such as figure 1 As shown, before the laser processing of the high-reflectivity material copper plate 1, a layer of copper nanoparticles 3 is distributed on the area 4 of the material to be processed. Wherein, the reflectivity of the high-reflectivity material copper plate 1 is above 80%, and the thickness range of the high-reflectivity material copper plate 1 is 1000-1000000nm. The size of the copper nanoparticles 3 is tens of nanometers to hundreds of nanometers, preferably 10 to 100 nm. The size of the metal nanoparticles in this range is more uniform and easier to control during the preparation process, and the metal nanoparticles in this range The matting of the particles is dominated by absorption. In addition, the shape of the copper nanoparticles 3 is not limited, and may be various three-dimensional geometric shapes such as spherical, rod, shell, cage, cluster, star, triangle or other irregular sh...

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Abstract

The invention discloses a method for processing a high-reflectance material based on the metal nanoparticle photothermal effect. The method comprises the following steps that A, a layer of metal nanoparticles is arranged on the surface of the high-reflectance material; B, the metal nanoparticles are irradiated by laser beams, metal nanoparticle surface plasma resonance is generated, photon energy is strongly absorbed by the metal nanoparticles and is converted and released to surrounding materials to be processed at ultrahigh speed, the materials to be processed are melted and gasified in ultrashort time, and laser processing is achieved. The problems that an existing method for processing the high-reflectance material through lasers wastes energy and is low in processing efficiency, and impurity intrusions exist are solved, efficient absorption of the high-reflectance material on the lasers is achieved, and then the efficiency for removing the materials through the lasers is improved obviously.

Description

technical field [0001] The invention relates to the technical field of laser processing, in particular to a new method for processing high-reflectivity materials or semiconductor materials coated with high-reflectivity metals by utilizing the photothermal effect of metal nanoparticles. Background technique [0002] With the continuous improvement of modern processing technology, the application of high-reflectivity materials is also more extensive, such as gold, silver, aluminum, copper, nickel and other high-reflectivity metal materials widely used in the automotive and aerospace fields, and semiconductor fields A semiconductor material whose middle surface is coated with the above-mentioned high-reflectivity metal. Since the reflectivity of high-reflectivity materials to light is as high as 80%, it is still a difficult problem to use lasers to process them. [0003] At present, for high-reflectivity metal materials, laser processing methods are limited to methods such as ...

Claims

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Application Information

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IPC IPC(8): B23K26/36B23K26/40
CPCC23C24/106
Inventor 任乃飞姜蕾蕾刘丹任旭东吕柳张文
Owner JIANGSU UNIV
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