Near‐Infrared Reflection Modulation Through Electrical Tuning of Hybrid Graphene Metasurfaces

Graphene, a 2D material with tunable optical properties, has recently attracted intense interest for reconfigurable metasurfaces. So far, the working wavelength of graphene-based or hybrid graphene metasurfaces been limited in mid-infrared and terahertz spectra. In this paper, by combining Au nanostructures, authors demonstrate near-infrared metasurface decent modulation efficiency, weak dependence on graphene's carrier mobility, small gate voltages, attributing to unique interband transition graphene. The experimental results agree well numerical simulations. It is also shown that properly designing structural parameters can be both regions.