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Tunable terahertz metasurface based on graphene and circuit

A graphene and metasurface technology, applied in the field of metasurfaces, can solve problems such as reducing the availability of metasurface units, and achieve the effects of absorption efficiency, improved availability, and high reflection efficiency

Pending Publication Date: 2020-05-08
HANGZHOU DIANZI UNIV FUYANG ELECTRONIC INFORMATION RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In general, many individualized metasurface units have been proposed for applications with high reflection / transmission or absorption efficiency for better performance, however, this reduces the usability of the studied metasurface units for other applications

Method used

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  • Tunable terahertz metasurface based on graphene and circuit
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  • Tunable terahertz metasurface based on graphene and circuit

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] On the contrary, the invention covers any alternatives, modifications, equivalent methods and schemes within the spirit and scope of the invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.

[0025] It includes a metal ground plate 10, a dielectric layer 20, and a graphene metal layer arranged...

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Abstract

The invention discloses a tunable terahertz metasurface based on graphene and a circuit. The tunable terahertz metasurface comprises a metal grounding plate, a dielectric layer and a graphene metal layer which are sequentially arranged from bottom to top, wherein the metal grounding plate is used as a reflection substrate; and the graphene metal layer comprises two pairs of graphene patches and two metal rings, the two metal rings are an outer metal ring and an inner metal ring, and the two pairs of graphene patches are arranged between the outer metal ring and the inner metal ring. Accordingto the invention, the chemical potential of the graphene patches is changed by changing bias voltages applied to the two pairs of graphene patches, the coupling between two loops is changed, the switching of the tunable terahertz metasurface between low reflectivity and high reflectivity is achieved, then the tuning of the metasurface is achieved, and the problem that a single metasurface unit structure cannot achieve a wave absorbing mode and a reflection mode at the same time is solved.

Description

technical field [0001] The invention belongs to the technical field of metasurfaces, and relates to a graphene-based tunable terahertz metasurface and a circuit. Background technique [0002] A metasurface is usually designed and composed of a group of artificial scatterers arranged in a certain order. Metasurfaces have been extensively developed in the past decade due to their special properties that are rare in nature. Specific functions can be achieved by engineering metasurfaces with different properties. From microwave frequencies to terahertz (THz) frequencies, and even to optical frequencies, metasurfaces have been widely used in electromagnetism, such as sensors, lenses, absorbers, and reflectors. In these applications, different functions are achieved by different cell geometries meeting the required reflection or transmission properties. For example, a crossed dipole and its complementary structure have been designed with remarkably high sensitivity at THz waves...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q17/00G02B1/00G02B5/00
CPCH01Q15/0086H01Q17/008G02B5/003G02B1/002
Inventor 程知群金江亮周涛周伟伟熊英健
Owner HANGZHOU DIANZI UNIV FUYANG ELECTRONIC INFORMATION RES INST CO LTD
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