Angularly tunable perfect absorption in graphene-mushroom hybrid structure for all angles
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2021-04-19
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en
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7
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Applied Physics Letters, Volume 118, issue 16
Abstract
In this work, the authors propose a graphene-based tunable perfect metamaterial absorber at microwaves that can achieve perfect absorption at all angles. This is realized by stacking an unpatterned graphene sandwich structure and a dielectric layer on top of a mushroom-type high impedance surface whose resonant frequency is stable for all angles of incidence. A perfect-absorption-angle tunable absorber working at TM polarization is designed and realized, achieving perfect absorption covering a wide range of angles from normal to grazing incidence at the same frequency when the impedance of graphene is modulated by different bias voltages. The design concept of integrating different tunable materials and meta-structures opens up promising possibilities for wave manipulation with applications in smart and multifunctional electromagnetic devices.Description
Funding Information: This work was supported by the National Natural Science Foundations of China (NSFC) (Nos. 61701268, 61775195, and 62075196). Zhen Xue acknowledges Changzhou Hua, Yu Zhang, Jiaqi Feng, and Peining Lai for their help in the sample test. We would like to thank Professor Sergei A. Tretyakov, Professor Constantin Simovski, and Professor Weiren Zhu for helpful discussions. Publisher Copyright: © 2021 Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
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Xue, Z, Zhong, S, Wang, X & Ma, Y 2021, ' Angularly tunable perfect absorption in graphene-mushroom hybrid structure for all angles ', Applied Physics Letters, vol. 118, no. 16, 161103 . https://doi.org/10.1063/5.0049851