Electromagnetic Cloaking of a Finite Conducting Wedge With a Nanostructured Graphene Metasurface

Here, we present the analytical formulation for the analysis of electromagnetic interaction with a finite conducting wedge covered with a cylindrically shaped nanostructured graphene metasurface, resulting in the scattering cancellation of the dominant scattering mode for all the incident and all the observation angles. By properly tuning the bias of graphene, it is shown that the surface reactance of graphene nanopatches can be adjusted for cloaking of wedges with an arbitrary angle of opening. It is also shown that the tunable cylindrical graphene metasurface can be effectively used for cloaking of several concentric finite conducting wedges. In addition, a wedge shaped metasurface is proposed as an alternative approach for cloaking of finite wedges. The analytical results are verified with the full-wave electromagnetic solver CST Microwave Studio, showing good agreement for different wedge scenarios.