Programmable terahertz metamaterials through V-beam electrothermal devices

A reconfigurable THz complex medium, obtained from the embedment of a V-beam electrothermal actuator as a tuning mechanism in a split-ring resonator, is proposed in this paper. When the appropriate actuation voltage is applied on the electrothermal microelectromechanical systems, a controllable metamaterial, presenting enhanced bandwidth tunability at two different resonances, is accomplished. Several polarization arrangements are investigated to enlighten the diverse attributes of the complex medium. The merits of the proposed device are thoroughly examined via a precise finite element method.