Active terahertz beam steering based on mechanical deformation of a liquid crystal elastomer metasurface

Traditionally, active metasurface research has primarily focused on changing the dielectric constant and permeability of the substrate, which frequently results in resonance effect and ohmic loss. However, a reconfigurable metasurface based on mechanical deformation can avoid these problems. At the moment, though, mechanical reconfigurable metasurfaces represented by the MEMS and FIB-induced deformation processes are difficult to fabricate or have limited resilience. As a new type of liquid crys...