Perfect double-layer terahertz absorber based on graphene metamaterial
Source abstract
Abstract
Using bilayer graphene structures (L-type and disk-type structures), we numerically demonstrate a tunable single-band terahertz metamaterial absorber with nearly perfect (100%) absorption by continuously adjusting the graphene Fermi energy parameters to determine the maximum absorption rate, the corresponding center frequency, and bandwidth. Graphene distinct dielectric–metal transition properties make it possible to achieve tunable terahertz absorption. The maximum absorption rate increases from 18% to 100% when the Fermi energy is increased from 0.1 to 1 eV. At 1 eV, the absorption rate exceeds 90% in the range of 0.57–1.03 THz. The incident angle is also tested. When the angle is in the range of 60°, excellent adsorption performance is maintained.
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Research context
OpenAlex topics: Metamaterials and Metasurfaces Applications · Advanced Antenna and Metasurface Technologies · Antenna Design and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Optoelectronic Engineering, Chengdu University of Information Technology 1 , Chengdu 610225, China
School of Communication and Electronic Engineering, East China Normal University 2 , Shanghai 200241, China
Institute of Applied Electronics, China Academy of Engineering Physics 3 , Mianyang 621000, China
College of Intelligent Manufacturing, Sichuan University of Arts and Science 4 , Dazhou 635000, China
Funding
Central Government Guided Local Science and Technology Development Projects
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