Tri-control large angle electromagnetically induced reflection in metamaterials with graphene and vanadium dioxide
Source abstract
Abstract
Graphene and vanadium dioxide (VO2) have been widely studied because of their flexibly tunable conductivity. In this study, a multilayer structure of a graphene disk and a VO2 square ring is investigated. The proposed structure exhibits an electromagnetically induced reflection (EIR) that is caused by a bright mode coupled with a dark mode. Since the permittivity of graphene can be modulated by chemical potential and electron–phonon relaxation time, while that of VO2 can be modulated by temperature, the EIR effect of the proposed structure can be tuned by the chemical potential and relaxation time of graphene as well as the surrounding temperature. Therefore, a triple-tunable EIR effect is obtained. Simulation results confirm that the tunable EIR phenomenon is polarization-independent owing to the symmetry of the structure. Moreover, a large angle EIR effect is obtained up to an angle of 80°. Our results can contribute significantly in applications of terahertz devices, such as slow light devices, absorbers, switching devices, and sensors.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Metamaterials and Metasurfaces Applications · Plasmonic and Surface Plasmon Research · Quantum optics and atomic interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Information Engineering, Huangshan University 1 , Huangshan 245041, China
Engineering Technology Research Center of Intelligent Microsystems 2 , Huangshan, AnHui 245041, China
State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University 3 , Shanghai 200433, China
Funding
Major Science and Technology of Anhui Province · Anhui Natural Science Foundation · Anhui Excellent Young Talents Support Program
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