Perfect Reflection/Transmission/Absorption in a Reconfigurable Metasurface

In this paper, an ultrathin tri-functional metasurface with PIN diodes and varactors incorporated is proposed. By varying the DC bias voltages, the proposed reconfigurable metasurface can achieve switchable functionalities of perfect reflection, transmission and absorption. The simulation results are presented and the performance of the metasurface is validated, which reveals that this metasurface may pave a new way for flexible manipulations of electromagnetic waves.