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A dislocation type three-dimensional metamaterial transparent absorber

A three-dimensional, metamaterial technology, applied in the field of electromagnetic metamaterials, can solve the problem that absorbers cannot take into account broadband absorption and high visible light transmittance, and achieve good electromagnetic absorption characteristics, reduce coupling inductance and capacitance, and good transparency The effect of the light rate characteristic

Active Publication Date: 2021-11-02
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: conventional absorbers cannot take into account the problems of broadband absorbing and high visible light transmittance. The present invention provides a dislocation-type three-dimensional metamaterial transparent absorber that solves the above problems, especially Applicable to visual window components that have specific absorption and shielding requirements for electromagnetic waves

Method used

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  • A dislocation type three-dimensional metamaterial transparent absorber
  • A dislocation type three-dimensional metamaterial transparent absorber
  • A dislocation type three-dimensional metamaterial transparent absorber

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Embodiment 1

[0038] This embodiment provides a dislocation-type three-dimensional metamaterial transparent absorber, which includes a plurality of structural units 1, and the plurality of structural units 1 are periodically and continuously distributed in two dimensions. Each structural unit 1 includes an upper structure and a lower structure. The upper structure includes hollow cylinder units 11 arranged in two rows in a dislocation manner. The first row includes two complete hollow cylinder units 11 arranged in gaps. The second row includes the right half structure of the hollow cylinder unit 11 arranged in sequence, a complete hollow cylinder unit 11 and the left half structure of the hollow cylinder unit 11, and the three are arranged with a certain gap; the lower structure includes the substrate layer 12 and a backplane layer 13 , the backplane layer 13 is attached to the outside of the substrate layer 12 , and the hollow cylinder unit 11 is fixed on the inside of the substrate layer 1...

Embodiment 2

[0041] This embodiment provides a dislocation-type three-dimensional metamaterial transparent absorber, which is further improved on the basis of Embodiment 1, and more than 20 structural units 1 are continuously distributed in the two-dimensional directions of the absorber. . A plurality of structural units are distributed in a rectangular array, and the right half structure of the hollow cylindrical unit 11 on one structural unit 1 is combined with the left half structure of the adjacent hollow cylindrical unit 11 on the same straight line to form a complete The hollow cylinder unit 11. Wherein, the included angle between the axial direction of the hollow cylinder unit 11 and the surface of the substrate layer 12 is 90°, and the hollow cylinder structure preferably adopts a cube, honeycomb prism or cylinder structure.

[0042] For the structural unit: the gap between adjacent hollow cylindrical units 11 in the same plane is S, and 0.3λ≥S≥0.1λ; the size of the structural uni...

Embodiment 3

[0047] This embodiment provides a dislocation-type three-dimensional metamaterial transparent absorber, which is further improved on the basis of Embodiment 2,

[0048] In this case, the shortest wavelength λ is 10mm, where:

[0049] Dimension p=2.4λ of structural unit 1,

[0050] The gap between adjacent hollow cylinder units 11 in the same plane is S=0.278λ,

[0051] The thickness g of the backplane layer 13 1 =0.005λ,

[0052] The thickness of the substrate layer 12 d=0.01λ,

[0053] The maximum dimension of the hollow cylinder unit 11 in the electric field polarization direction L=1.01λ,

[0054] Hollow cylinder unit 11 height h=1.1λ,

[0055] The thickness of the supporting layer 111 is w=0.04λ,

[0056] The thickness of the conductive film layer 112 is g 0 = 0.001λ.

[0057] Wherein the backplane layer 13 and the conductive film layer 112 all adopt ITO resistance film, and its conductivity is 10 3 S / m, wherein both the support layer 111 and the substrate layer 1...

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Abstract

The invention discloses a dislocation-type three-dimensional metamaterial transparent absorber. Several structural units are periodically and continuously distributed in two dimensions. Each structural unit includes an upper structure and a lower structure. The upper structure includes dislocations arranged in two rows. Hollow cylindrical units, the first row includes two complete hollow cylindrical units arranged in gaps, the second row includes the right half structure of the hollow cylindrical units arranged in sequence, a complete hollow cylindrical unit and The left half structure of the hollow cylinder unit, the three are arranged with a certain gap; the lower structure includes the substrate layer and the backplane layer; the side wall of the hollow cylinder structure is used as a support layer, and the inner side is used to attach a conductive film layer; the structural unit Made of transparent material. The present invention uses a two-dimensional three-dimensional hollow cylinder unit arrangement structure that can generate multi-resonance with space electromagnetic waves, so that the absorber has the characteristics of broadband absorbing, thereby solving the problem that the current absorber cannot take into account both broadband absorbing and high visible light The issue of transmittance.

Description

technical field [0001] The invention relates to the technical field of electromagnetic metamaterials, in particular to a dislocation-type three-dimensional metamaterial transparent absorber. Background technique [0002] Absorbing materials refer to a class of materials that can absorb electromagnetic wave energy projected onto its surface. Metamaterial absorbers have been widely used in electromagnetic compatibility and other fields because of their unique perfect absorption characteristics. Some special electronic and electrical equipment require both the ability to absorb electromagnetic waves and the corresponding ability to transmit light to visible light, but traditional absorbers cannot have both properties of wave absorption and transparency, such as a three-dimensional The unit broadband periodic absorbing structure cannot take into account both broadband absorbing and high visible light transmittance at the same time. With the development of science and technology...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q17/00
CPCH01Q17/008
Inventor 齐聪慧杨伟郭奕董秀成
Owner XIHUA UNIV
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