Fig. 4: Ultra-thin graphene-Au WiFi antenna.
From: Ultra-flexible graphene-metal nanomembrane for wireless applications
a Optical image of the square spiral antenna made of graphene-Au nanomembranes under stretching. b Shifts of the resonant frequencies of the antennas made by graphene-Au (red line) and Au (blue line) nanomembranes in the fatigue tests with a strain of 3%. c–e Two-dimensional radiation patterns, S11, and VSWR spectra of graphene-Au (red lines) and Au (blue lines) square spiral antennas, respectively. f Comparison of the S11 values with thickness in different studies. g Wireless video communication platform consisting of the graphene-Au WiFi antenna, camera, and WiFi module. h Clear and precise video output of a mobile phone captured by the camera.
