Realization of THz dualband absorber with periodic cross-shaped graphene metamaterials
Fan Chunzhen, Tian Yuchen, Ren Peiwen, Jia Wei
       

(a) Absorption spectra of our proposed dualband THz absorber with different values of the refractive index n. (b) The relationship between spectral shift Δ f of the absorption peak and the refractive index of the substrate.