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Non-uniform electric loss metamaterial and preparation method thereof

An electric loss and non-uniform technology, applied in the field of metamaterials, can solve the problems that continuous and arbitrary changes cannot be achieved, and the position accuracy of non-uniform electric loss microstructures is difficult to guarantee.

Active Publication Date: 2019-11-12
KUANG CHI CUTTING EDGE TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With multiple printings, on the one hand, due to alignment problems, it is difficult to guarantee the positional accuracy of non-uniform electrical loss microstructures; on the other hand, with multiple printings, the thickness can only be changed in steps, and continuous and arbitrary changes cannot be achieved

Method used

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  • Non-uniform electric loss metamaterial and preparation method thereof
  • Non-uniform electric loss metamaterial and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First, prepare a drum-type steel mold (2M in diameter, 1M in length). Two microgrooves are etched on the surface of the steel mold with EDM. Then, pour the carbon slurry on the steel mold (roller), control the gap between the scraper and the roller, and scrape off the excess slurry outside the groove. After that, the carbon slurry in the microgroove is transferred to the fiber membrane by pressing the roller and the fiber membrane. The thickness of the slurry on the fiber membrane is equal to the depth of the microgroove on the roller at the corresponding position, that is, the non-uniform electrical loss Super material.

Embodiment 2

[0030] First prepare a drum-type steel mold (diameter 2M, length 1M), the surface of the steel mold surface is etched with two microgrooves by electric spark, the width of the first groove is 50μm, and the depth is 30μm~50μm Gradient changes; the other The width of the groove is 40 μm, and the depth varies from 20 μm to 40 μm in a gradient. Then, pour the silver paste on the steel mold (roller), control the gap between the scraper and the roller, and scrape off the excess paste outside the groove. Afterwards, the carbon slurry in the microgroove is transferred to the fiber membrane through the pressing of the roller and the fiber membrane. The thickness of the slurry on the fiber membrane is equal to the depth of the microgroove on the roller at the corresponding position, that is, a non-uniform electric current is obtained. loss of metamaterials.

Embodiment 3

[0032] Prepare a mold of a flat plate, the surface of the mold is grooved, the depth of the groove is the same as the thickness of the microstructure, the depth of one end of the groove is 30 μm, and the depth of the other end is 60 μm. The copper paste is filled into the slot by scraping with a scraper. Afterwards, the polymer film is pasted on the upper surface of the mold, cured and demoulded, and microstructure patterns with different thicknesses are obtained, that is, non-uniform electrical loss metamaterials are obtained.

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Abstract

The invention provides a non-uniform electric loss metamaterial and a preparation method thereof. The preparation method comprises the following steps of preparing non-uniform electric loss metamaterials with different thicknesses on a bearing membrane in one time. For example, a drum-type template having a plurality of grooves is provided; slurry is poured onto the drum-type template to remove excess slurry outside the plurality of grooves; and the slurry in the plurality of grooves is transferred to the bearing membrane. The non-uniform electric loss metamaterial disclosed by the invention realizes different resistance values due to different thicknesses, and is beneficial to implementation of different functional requirements. The non-uniform electric loss metamaterial can be applied tometamaterial devices and is used for absorbing electromagnetic waves.

Description

technical field [0001] The present invention relates to metamaterials, in particular to heterogeneous electrical loss metamaterials and a preparation method thereof. Background technique [0002] With the development of metamaterial technology, there are more and more demands for various properties of metamaterials. One of the needs is to obtain non-uniform electrical loss metamaterials, ie metamaterials with microstructures of different resistance values. [0003] At present, the conventional screen printing process (also known as screen printing process) is generally used to print resistive materials (such as carbon paste, silver paste, copper paste, etc.) on the carrier, and realize the control of the resistance value by controlling the thickness of the paste. Control, so as to realize the processing of electrical loss microstructure. [0004] The current solution can only realize the processing of microstructures with equal thickness. For non-uniform electrical loss mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B12/00H01B13/00
CPCH01B12/00H01B13/0026Y02E40/60
Inventor 不公告发明人
Owner KUANG CHI CUTTING EDGE TECH LTD
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