Cloaking of a conducting finite wedge with graphene nanopatches

In this study, an analytic approach is presented for the graphene-based cloaking of conducting finite wedges with an arbitrary angle of opening in the terahertz (THz) spectrum. We show that a periodic array of graphene nanopatches reduces scattering significantly for all angles of incidence. The analysis is based on Lorenz-Mie scattering theory with the use of sheet impedance boundary conditions. The proper cloaking impedance is obtained by precisely tailoring the parameters of nanopatches and the Fermi energy level of graphene.