Dynamically tunable terahertz passband filter based on metamaterials integrated with a graphene middle layer

Yang MaoSheng^{1, 2, 4}, Liang LanJu^{1, 2, 3, †}, Wei DeQuan^{1, 4, ‡}, Zhang Zhang^{1, 2, 3, 4}, Yan Xin^{1, 2, 3, 4}, Wang Meng^{1, 4}, Yao JianQuan^{1, 3, 4}

(color online) Distribution of resonant electric fields on the top-layer Au film treated with different Fermi energies.