A dual-tunable terahertz absorber using graphene-ZnO-VO2 hybrid structure for quad-band absorption, broadband-narrowband switching, and refractive-index sensing
An optimized dual-tunable terahertz (THz) absorber based on a graphene-ZnO-VO 2 hybrid architecture is proposed for tunable absorption, switching, and refractive-index sensing applications. The absorber consists of a connected four-cut graphene resonator integrated with a ZnO dielectric spacer and a VO 2 ground l...