Fig. 5: Portable graphene-Au metasurface cloaks for electromagnetic stealth applications.
From: Ultra-flexible graphene-metal nanomembrane for wireless applications

a Schematic of the graphene-Au nanomembranes used in the metasurface cloak. b Evaluation arrangement with the inset showing a metal ball covered by the metasurface cloak. c 2D radiation patterns of the antennas under three different conditions: without metasurface cloaks (yellow line), with Au metasurface cloaks (blue line), and with graphene-Au metasurface cloaks (red line).