Extraordinary THz absorption in 2D material-dielectric integrated metasurfaces

This work discusses our recent findings on 2D material-dielectric integrated metasurfaces, as an alternative approach to 2D material-metal hybrid metamaterials, for providing efficient control of the electromagnetic beam propagation at THz wavelengths. The analyzed structures consist of a passive dielectric pattern and a reconfigurable 2D material sheet whose THz optical conductivity can be actively tuned. We show that via optimizing the geometric dimensions in the patterns it is possible to attain almost complete absorption by the 2D material at an arbitrary frequency of interest.