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Graphene wave-absorbing metamaterial for encrypted computer display

A metamaterial, graphene technology, applied in electrical components, magnetic field/electric field shielding, antennas, etc., can solve the problems of narrow absorption bandwidth and limited application scenarios, and achieve improved absorption performance, easy incidence, and improved light transmission performance. Effect

Active Publication Date: 2020-08-28
NO 33 RES INST OF CHINA ELECTRONICS TECHNOOGY GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the absorbing rate is required to be greater than 90%, its absorbing bandwidth is too narrow so that its application scenarios are greatly limited

Method used

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  • Graphene wave-absorbing metamaterial for encrypted computer display
  • Graphene wave-absorbing metamaterial for encrypted computer display
  • Graphene wave-absorbing metamaterial for encrypted computer display

Examples

Experimental program
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Effect test

Embodiment

[0041] Such as Figure 1 to Figure 11 As shown, a graphene wave-absorbing metamaterial used for encrypting computer displays includes a plurality of periodically arranged metamaterial structural units 3, and each metamaterial structural unit 3 includes a double-layer metamaterial structure, which is respectively a metamaterial structure Ⅰ1 and metamaterial structure Ⅱ2;

[0042] The metamaterial structure I1 includes a first conductive layer 11 and a first dielectric layer 12, the first conductive layer 11 is arranged on the first dielectric layer 12, and the first conductive layer 11 is provided with double "L"-shaped structure 13, the sides of the "L"-shaped structure are respectively parallel to the sides of the corresponding metamaterial structural unit 3; the square resistance value of the first conductive layer 11 is S 1 , the thickness of the first dielectric layer 12 is h 1 , the dielectric constant is e 1 .

[0043]The metamaterial structure II2 includes a second...

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Abstract

The invention relates to a graphene wave-absorbing metamaterial for an encrypted computer display. The metamaterial structure comprises a plurality of periodically arranged metamaterial structure units, each meta-material structure unit comprises a meta-material structure I and a meta-material structure II. The metamaterial structure I comprises a first conductive layer and a first dielectric layer; the first conductive layer is arranged on the first dielectric layer; the first conductive layer is provided with a double-L-shaped structure which is symmetrical about the center of the metamaterial structure unit. The metamaterial structure II comprises a second conducting layer and a second dielectric layer, the second conducting layer is arranged on the second dielectric layer, the second conducting layer is provided with four L-shaped structures which are symmetrical about the center of the metamaterial structure unit, and the edges of the L-shaped structures are parallel to the edgesof the corresponding metamaterial structure units respectively; the thickness is small, the absorption rate of electromagnetic waves with the working frequency band ranging from 8.25 GHz to 17.35 GHzis higher than 90%, and the average transmittance of visible light bands is 85%; the invention relates to the technical field of electromagnetic protection.

Description

technical field [0001] The invention relates to the technical field of electromagnetic protection, more specifically, to a graphene wave-absorbing metamaterial used for encrypting computer displays. Background technique [0002] With the wide application of electronic components and electronic equipment, while they bring great convenience, the electromagnetic radiation generated will also affect people's daily life, making the electromagnetic environment of human living space worse and worse. The electromagnetic interference generated by it will not only cause serious interference to electronic equipment such as computers and instruments, and even cause irreversible damage, but also cause a certain degree of harm to personnel in the electromagnetic environment. Therefore, requirements for electromagnetic shielding have been put forward in many fields, especially for observation windows of aerospace equipment, communication equipment encrypted computer displays, precision ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H05K9/00
CPCH01Q15/0086H05K9/0084
Inventor 赵亚娟张贵恩陈玮君王月祥张小刚
Owner NO 33 RES INST OF CHINA ELECTRONICS TECHNOOGY GRP
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