Tunable Broadband Terahertz Metamaterial Absorbers Based On Vo2

Lei Kang,Huaguang Bao,Sawyer D. Campbell,Pingjuan L. Werner,Douglas H. Werner,Shengxiang Wang,Chengfeng Cai,Menghan You,Fangyan Liu,Menghao Wu,Songzhan Li

2020 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND NORTH AMERICAN RADIO SCIENCE MEETING（2020）

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摘要

In this paper, a vanadium dioxide (VO2) based broadband THz metamaterial absorber is presented. We verify by full-wave simulations the broadband absorptivity of the proposed absorber dramatically varies as a function of the VO2's THz electrical conductivity which experiences a three orders of magnitude increase during an insulator-to-metal transition (IMT). The proposed metamaterial absorbers are capable offering strong modulation of THz radiation over a broad frequency band.

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关键词

THz radiation, tunable, metamaterial absorber, vanadium dioxide, phase transition

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