Ultra-broadband and polarization-independent planar absorber based on multilayered graphene
Wang Jiao1, Gao Chao-Ning1, Jiang Yan-Nan1, 2, †, Nwakanma Akwuruoha Charles3
       

Absorption as a function of frequency and two parameters of the dielectric substrate for the proposed absorber with N = 1: (a) thickness, (b) permittivity.