Spectroscopy and Spectral Analysis, Volume. 42, Issue 4, 1257(2022)

Terahertz Broadband Tunable Metamaterial Absorber Based on Graphene and Vanadium Dioxide

Su-ya-la-tu LIU*, Zong-li WANG, Hui-zhong PANG, Hu-qiang TIAN, Xin WANG*;, and Jun-lin WANG*;
Author Affiliations
  • College of Electronic and Information Engineering, Inner Mongolia University, Huhhot 010021, China
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    Figures & Tables(7)
    Schematic diagram of a terahertz broadband tunable metamaterial absorber based on graphene and vanadium dioxide
    When the top I-shaped resonator is at an angle of 45° with the X-axis (a) the absorption spectrum of the absorber and (c) the real and imaginary parts of the relative impedance of the absorber; When the top I-shaped resonator is perpendicular to the X-axis (b) the absorption spectrum of the absorber and (d) the real and imaginary parts of the relative impedance of the absorber
    When the Fermi level of graphene is 0.1 eV and the conductivity of vanadium dioxide is 200 000 S·m-1, The top and bottom surface current distribution at f1=1.87 THz, f2=3.04 THz, f3=4.16 THz
    Absorption spectra of different structures
    Absorption spectra of metamaterial absorbers under different Fermi levels of graphene
    (a) Absorption spectra of metamaterial absorbers with different VO2 conductivities; (b) Top view of electric field intensity distribution at 3.04 THz when the conductivity of vanadium dioxide is 100 S·m-1; (c) Top view of electric field intensity distribution at 3.04 THz when the conductivity of vanadium dioxide is 200 000 S·m-1
    Influence of different structural parameters on absorber absorption performance(a): I-shaped thickness T1; (b): Length of I-shaped middle strip L1
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    Su-ya-la-tu LIU, Zong-li WANG, Hui-zhong PANG, Hu-qiang TIAN, Xin WANG, Jun-lin WANG. Terahertz Broadband Tunable Metamaterial Absorber Based on Graphene and Vanadium Dioxide[J]. Spectroscopy and Spectral Analysis, 2022, 42(4): 1257

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    Paper Information

    Category: Research Articles

    Received: Mar. 15, 2021

    Accepted: --

    Published Online: Jul. 25, 2023

    The Author Email: LIU Su-ya-la-tu (2834846930@qq.com)

    DOI:10.3964/j.issn.1000-0593(2022)04-1257-07

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