Switchable circular polarization in flower-shaped reconfigurable graphene-based THz microstrip patch antenna

VO2-Graphene Ultrathin Films: Enabling Wideband Switchable and Tunable THz Absorption

“…While metallic absorbers have traditionally dominated the field of THz absorption, non-metallic absorbers, particularly those based on materials like Vanadium dioxide (VO2), have garnered increasing attention due to their unique properties and advantages. Non-metallic absorbers offer distinct advantages over metallic counterparts, including lower losses, dynamic tunability, and compatibility with integrated circuit fabrication processes [11], [12]. VO2, in particular, undergoes a phase transition from an insulating to a metallic state at a critical temperature, enabling reversible modulation of its electrical and optical properties.…”