Reconfigurable terahertz metamaterials through piezoelectric microgrippers

A reconfigurable THz metamaterial, obtained from the exclusive exploitation of a piezoelectric microgripper as a split-ring resonator, is introduced in this paper. By applying the appropriate actuation voltage on the piezoelectric component, a controllable complex medium, presenting enhanced bandwidth tunability, is accomplished. Extensive numerical results, via a rigorous finite element method, support the efficiency and reveal the advantages of the proposed structure.