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Single-point nano-welding method based on photothermal effect

A technology of photothermal effect and welding method, applied in laser welding equipment, welding equipment, metal processing equipment, etc., to achieve high scalability, improve optical performance and mechanical performance.

Inactive Publication Date: 2015-12-16
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In summary, there is currently no simple, direct, and controllable method for single-point welding of nanomaterials

Method used

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  • Single-point nano-welding method based on photothermal effect
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  • Single-point nano-welding method based on photothermal effect

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Embodiment Construction

[0022] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings: the case of this embodiment is based on the single-point nano-welding technology based on the photothermal effect proposed by the present invention, but the scope of protection of the present invention is not limited to the following embodiments and cases .

[0023] Such as figure 1 As shown, a single-point nano-welding method based on the photothermal effect uses a device including a monochromatic continuous laser, an optical attenuator, a shutter, a quarter slide, a microscope, a sample stage, and a power meter. The specific welding method is as follows: use the continuous laser to output the monochromatic laser, then adjust the incident power of the monochromatic laser through the beam attenuator, and then use the shutter to control the passing time of the monochromatic laser; then the monochromatic laser passes through a quarter of th...

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Abstract

The invention discloses a single-point nano-welding method based on the photothermal effect. Most of existing nano-welding inventions and researches are based on large-scale nanowire networks. A continuous laser is utilized for outputting single-color laser light, the incident power of the single-color laser light is adjusted through a beam attenuator, and then a shutter is used for controlling the transit time of the single-color laser light; the single-color laser light is converted to circular polarization from linear polarization after passing a quarter-wave plate, the light is reflected by a beam splitter in an optical microscope to enter a microscope objective and then is focused at the position, to be irradiated, of a metal nano element, the metal nano element is excited to generate the photothermal effect due to the surface plasmon excimer features, and a melting or welding process occurs. By means of the single-point nano-welding method, the nano element can be rapidly assembled in a non-contact mode, the welding position can be flexibly controlled, damage to a substrate is small, and the structure expansibility in the micro-nano machining field is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of micro-nano processing, and in particular relates to a micro-nano welding method based on photothermal effect. Background technique [0002] In the field of micro-nano processing, with the advancement of advanced manufacturing technology and the innovation of analytical tools, the morphology changes of nanomaterials, especially welding phenomena, have given rise to a series of emerging applications, such as transparent conductor electrodes, thin-film solar cells, nanocatalysts, Cancer treatment, nano patterning technology, etc. [0003] Recently, E. Garnett et al. proposed that the use of tungsten-halogen lamps to irradiate silver nanowires can produce self-limited welding at the intersections of nanowires, and this welding can greatly improve the performance of transparent conductor electrodes (US Patent No. US2014 / 0090870A1). This undoubtedly provides a simple and feasible method for large-scale produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/21
CPCB23K26/20
Inventor 李强戴硕蔚仇旻
Owner ZHEJIANG UNIV
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