A dual-to-single mode metasurface absorber using phase transition of vanadium dioxide

A tunable and polarization-insensitive absorber is proposed. The design employs a gold-based metasurface hybridized with vanadium dioxide. The phase-transition property of vanadium dioxide is used to control the operation of the metasurface absorber. In this paper, we study the behavior of the metasurface operating at mid-infrared frequencies in single or dual-band mode based on the operating temperature.