Active control of broadband plasmon-induced transparency in a terahertz hybrid metal–graphene metamaterial

Zhaojian Zhang; Junbo Yang; Xin He; Yunxin Han; Jingjing Zhang; Jie Huang; Dingbo Chen; Siyu Xu

doi:10.1039/C8RA04329A

Active control of broadband plasmon-induced transparency in a terahertz hybrid metal–graphene metamaterial

Zhaojian Zhang,

^a Junbo Yang,*^b Xin He,^b Yunxin Han,^b Jingjing Zhang,^a Jie Huang,^a Dingbo Chen^a and Siyu Xu^a

Author affiliations

* Corresponding authors

^a College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China
E-mail: 376824388@qq.com

^b Center of Material Science, National University of Defense Technology, Changsha 410073, China
E-mail: yangjunbo@nudt.edu.cn

Abstract

A hybrid metal–graphene metamaterial (MM) is reported to achieve active control of broadband plasmon-induced transparency (PIT) in the THz region. The unit cell consists of one cut wire (CW), four U-shaped resonators (USRs) and monolayer graphene sheets under the USRs. Via near-field coupling, broadband PIT can be produced through the interference between different modes. Based on different arrangements of graphene positions, not only can we achieve electrical switching of the amplitude of broadband PIT, but can also realize modulation of the bandwidth of the transparent window. Simultaneously, both the capability and region of slow light can be dynamically tunable. This work provides schemes to manipulate PIT with more degrees of freedom, which will find significant applications in multifunctional THz modulation.

Article information

https://doi.org/10.1039/C8RA04329A

Article type

Paper

Submitted

21 May 2018

Accepted

26 Jul 2018

First published

03 Aug 2018

This article is Open Access

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RSC Adv., 2018,8, 27746-27753

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Active control of broadband plasmon-induced transparency in a terahertz hybrid metal–graphene metamaterial

Z. Zhang, J. Yang, X. He, Y. Han, J. Zhang, J. Huang, D. Chen and S. Xu, RSC Adv., 2018, 8, 27746 DOI: 10.1039/C8RA04329A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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Active control of broadband plasmon-induced transparency in a terahertz hybrid metal–graphene metamaterial

Abstract

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Active control of broadband plasmon-induced transparency in a terahertz hybrid metal–graphene metamaterial

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