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Reflecting stealth method and device based on graphite metasurface

A graphene and metasurface technology, applied in camouflage devices, chemical instruments and methods, protective equipment, etc., can solve the problems of narrow working bandwidth, narrow angle of incidence, poor stealth effect, etc., and achieve good stealth effect and angle of incidence. The effect of large, wide working bandwidth

Active Publication Date: 2019-07-26
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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Problems solved by technology

[0005] The purpose of the present invention is to provide a reflective stealth method and device based on graphene metasurfaces to solve the problems of the existing metasurface stealth design with narrow working bandwidth, narrow angle of incidence, and poor performance due to difficult tuning.

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  • Reflecting stealth method and device based on graphite metasurface
  • Reflecting stealth method and device based on graphite metasurface
  • Reflecting stealth method and device based on graphite metasurface

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0042] Device example:

[0043] The present invention provides a reflective cloaking device based on graphene metasurface, such as figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 As shown, including the upper graphene layer 1, the middle dielectric layer 2 and the lower metal substrate layer 3, the graphene layer is etched with rectangular holes of M rows×N columns, and the geometric centers of every two adjacent rectangular holes The distances between them are equal; the geometric dimensions of the graphene rectangular holes are expressed as a and b, and the thickness of the dielectric layer is t. The terahertz plane wave is incident vertically downward, and the polarization direction is parallel to the side of the graphene rectangular hole with a size a. The graphene layer reflects part of the incident terahertz plane wave, and the metal subst...

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Abstract

The invention relates to the technical field of radar detecting stealth, in particular to a reflecting stealth method and device based on a graphite metasurface. The device comprises a lower metal substrate layer, a middle dielectric layer and an upper graphite layer. M*N rectangular holes are etched in the graphite layer. By forming the corresponding rectangular holes in the graphite layer, the geometric dimensions of the rectangular holes in the same rows are the same, the geometric dimensions of the rectangular holes in the rows are matched with the heights from the centers of the rectangular holes to the horizontal ground, reflecting wave phase space distribution is modulated by means of resonance of plasmons on the surfaces of the graphite rectangular holes in different sizes in a metasurface structure, reflecting wavefront reconstruction is achieved, a camouflage stealth effect is achieved, the applicable operation bandwidth is wide, the incidence angular domain is large, in addition, the performance can be tuned, and the stealth effect is good.

Description

technical field [0001] The invention relates to the technical field of radar detection stealth, in particular to a reflective stealth method and device based on a graphene metasurface. Background technique [0002] Stealth is particularly important in the military field. With the development of science and technology, traditional stealth technologies such as plastic surgery, radar absorbing materials, active and passive impedance loading can no longer meet the needs. Metamaterials are a kind of artificial composite materials or structures composed of periodic or non-periodic arrangements of subwavelength unit structures, which have extraordinary physical properties that natural materials do not have. Without violating the basic laws of physics, people can achieve a refractive index completely different from conventional materials by designing the orderly structure of the key physical dimensions of metamaterials, break through the bottleneck of traditional material resources,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F41H3/00B32B9/00B32B9/04B32B15/04B32B33/00
CPCB32B9/007B32B9/04B32B15/04B32B33/00B32B2250/03F41H3/00
Inventor 丁佩吕闯田喜敏李艳邵立曾凡光
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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