Graphene-based programmable surfaces dynamically shape THz and millimeter waves, advancing non-invasive imaging, 6G

https://phys.org/news/2025-03-graphene-based-programmable-surfaces-advance.html

"active spatial light modulator/ surface with >300K sub-wavelength pixels capable of manipulating transmissive/ reflective THz, using large-area thin-film transistor arrays, enabling high-speed, programmable control over amplitude/ phase... real time configuring complex THz wavefronts... programmable THz transmission patterns, beam steering carrying orbital angular momentum, grayscale holography,.. proof-of-concept single-pixel THz camera.... fine-tuned graphene electrostatic gating... imaging concealed metals"