Abstract

In this work we have proposed a novel-shaped metamaterial resonator for terahertz (THz) applications. The proposed resonator consisted of two types of V-shaped metal strip with upward and downward openings and the supportive resin substrate exhibits four high-Q resonance peaks. The surface current and magnetic field distribution at resonance frequencies unveils that incident electromagnetic wave can excite the surface current on the metal strips and form magnetic dipoles, which explains multi-band resonance via the coupling of multi-order magnetic dipoles. Geometric parameters are systemically analyzed to verify the robust THz resonance of proposed structure. It can be expected that our metamaterial structure can be utilized for potential applications including sensing and filtering.

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