Terahertz Absorber with Graphene Enhanced Polymer Hemispheres Array

We propose an original technique for the fabrication of terahertz (THz) metasurfaces comprising a 3D printed regular array of polymer hemispheres covered with a thin conductive layer. We demonstrate that the deposition of a thin metal layer onto polymer hemispheres suppresses the THz reflectivity to almost zero, while the frequency range of such a suppression can be considerably broadened by enhancing the structure with graphene. Scaling up of the proposed technique makes it possible to tailor the electromagnetic responses of metasurfaces and allows for the fabrication of various components of THz photonics.

Automated summary

The proposed technique utilizes a 3D printed array of polymer hemispheres covered with a thin conductive layer to fabricate terahertz metasurfaces, which can effectively suppress THz reflectivity. The addition of graphene enhances the structure and broadens the frequency range of suppression. Scaling up the technique allows for customized electromagnetic responses of metasurfaces for various THz photonics components.