Flexible terahertz metamaterials: towards a terahertz metamaterial invisible cloak

In this work, we present flexible metamaterials on free standing polyimide substrates operating at terahertz (THz) frequencies range. The successful demonstration of THz flexible metamaterials provides a path forward for creating multi-layer non-planar metamaterials such as THz invisible cloak. We also present a design for a metamaterial cylindrical shell capable of acting as an invisible cloak at 0.5 THz along with present measurements of the individual elements which constitute the cloak. These results serve as an important step forward in constructing a functional THz cloak.