Tunable Cylindrical Hyperlens for THz Band

Abstract

Hyperbolic metamaterials play a great interest in possible solutions to achieve high-resolution images through the creation of hyperlenses. Here, we propose the design of active hyperlens composed of a multilayer stack of alternating layers of silicon and indium antimonide covered by a single layer of graphene. By changing the dielectric permittivity of graphene by an external electric field we can tailor the sub-diffraction imaging enabling the potential applications in real-time super-resolution imaging and sensing.