paper 150302034121

Abstract

An novel graphene-based metamaterial with tunable electromagnetically induced transparency (EIT)-like transmission is numerically studied in this paper. The designed struc- ture consists of a graphene layer composed of coupled cut-wire pairs printed on a substrate. The simulation confirms that an EIT-like transparency phenomenon occurs in the metamaterial owing to indirect coupling and the proposed structure can be used in terahertz frequency range. More importantly, the transparency windows for the structures with indirect coupling can be dynami- cally controlled over a broad frequency range by varying the Fermi energy levels of the graphene layer (through electrostatic gating). The proposed metamaterial structure offers an additional opportunity to design novel applications such as switching and modulators.

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Bo-Rui Bian

Guowen Ding

Xiang-Kun Kong

Hai-Ming Li

Shaobin Liu

Hai Feng Zhang