Spoof surface plasmons resonance effect and tunable electric response of improved metamaterial in the terahertz regime

Wang Yue†^a),^b), Zhang Li-Ying^b), Mei Jin-Shuo^a), Zhang Wen-Chao^a), Tong Yi-Jing^c)

Retrieved equivalent permittivity ɛ values at the resonance frequency f ₀ of the metamaterial.