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Terahertz broadband adjustable wave absorber based on petal-shaped graphene material

A graphene and terahertz technology, applied in the terahertz field, can solve problems such as high cost and limited flexible application functions of absorbers, and achieve the effects of simple structure, broadband absorption rate tuning, and large incident angle

Pending Publication Date: 2020-09-22
ANYANG NORMAL UNIV
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Problems solved by technology

[0003] In recent years, the terahertz wave absorber researched at home and abroad mainly realizes the adjustable function by changing the geometric parameters, which limits the flexible application function of the wave absorber, and the cost is high

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  • Terahertz broadband adjustable wave absorber based on petal-shaped graphene material
  • Terahertz broadband adjustable wave absorber based on petal-shaped graphene material
  • Terahertz broadband adjustable wave absorber based on petal-shaped graphene material

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] refer to figure 1 A terahertz broadband tunable absorber based on petal-shaped graphene material is characterized in that it includes several structural units, and the unit structure includes bottom metal (1), intermediate dielectric layer (2) and top graphene film ( 3), the geometric centers of the bottom metal (1), the intermediate dielectric layer (2) and the top graphene film (3) coincide, and the structure of the top graphene film (3) is a petal-like structure, and the petal-like structure includes Eight fusiforms with the same geometric shape, one end of the fusiforms coincides with the center of the unit structure and the other end is radially arranged with an angle of 45 degrees between adjacent fusiforms, and there is overlap between adjacent fusiforms. The underlying metal (1) is made of copper with a thickness of 0....

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Abstract

The invention disclosesa terahertz broadband adjustable wave absorber based on a petal-shaped graphene material. The absorber comprises a plurality of structural units, each structural unit structurally comprises bottom layer metal (1), a middle dielectric layer (2) and a top layer graphene film (3), and the geometric centers of the bottom layer metal (1), the middle dielectric layer (2) and the top layer graphene film (3) coincide. The wave absorber can achieve broadband strong absorption of terahertz waves, is simple in structure, and can meet the requirements for application in the aspect of terahertz wave absorption.

Description

technical field [0001] The invention relates to the technical field of terahertz, in particular to a terahertz broadband adjustable wave absorber based on a petal-shaped graphene material. Background technique [0002] Terahertz waves generally refer to electromagnetic waves with frequencies ranging from 0.1 to 10 THz, which are located between infrared waves and microwaves. Because terahertz wave has many unique properties, such as transient, broadband, low-energy, coherence, etc., it is very important in the fields of basic research, industrial application, medicine, military, biology and communication. application prospects. At present, terahertz wave generation source and terahertz wave detection are recognized as two key issues restricting the development of terahertz technology. The absorption and energy capture of terahertz waves is the basis for terahertz detection, and it is also the core issue of terahertz wave calibration, regulation, conversion and application....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00G02B5/00
CPCG02B5/003H01Q17/008
Inventor 王红燕胡丹马永康
Owner ANYANG NORMAL UNIV
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