Numerical Investigation on Graphene Based Mantle Cloaking of a PEC Cylinder

A specific coating for the achievement of the mantle cloaking of a metallic cylinder in the Terahertz frequencies is investigated. The coat is realized starting from a dielectric layer covering the cylinder, over which a certain number of modulated strips of graphene are laid. Properly set the values of the available parameters (chemical potential of graphene μ_c, dielectric constant, dielectric thickness h, number of modulated strips n and variation of width of each strip w(z)), a combination of the values that allows to reach the cloaking of the object is obtained. In order to quantify the cloaking at the desired frequency f₀, the Maximum Radar Cross Section is computed and compared to the various structures.