A multimodal switchable terahertz metamaterial absorber based on the coupling of VO2 and graphene.
A switchable terahertz metamaterial absorber based on the phase transition of vanadium dioxide (VO2) and a graphene resonant layer is presented. The absorber consists of a six-layer stacked structure comprising a VO2 double-ring layer, a Topas dielectric layer, a graphene layer, a patterned Au layer, a second Topas die...