Amplification and modulation effect of elliptical surface polaritons on a thermal diode

• A first investigation for the VO 2 -based radiative diode consisting of the anisotropic metasurface. • Enhanced rectification performance due to hybridization effect of the anisotropic surface polaritons of black phosphorus. • Demonstrated a more flexible thermal diode that can be actively modulated contrast than those in literature. With the development of surface polaritons of two-dimensional metasurfaces with high mode density, considerable...