Transparent polymeric metagratings for augmented-reality glasses
Fully polymeric, encapsulated metagratings made by nanoimprint lithography reflect red, green and blue light while staying transparent: a scalable route to AR optical combiners.
Two colours of light from one infrared beam: a graphene–lithium niobate metasurface
A hybrid graphene–LiNbO3 metasurface generates second and third harmonics simultaneously, boosted by guided-mode resonances that are tuned by geometry.
Smarter, faster design of metasurfaces that scatter radar waves
A hybrid genetic algorithm and a new “spiralling cross” unit cell yield an X-band coding metasurface with up to 21 dB radar cross-section reduction, validated by measurements.
A transparent graphene “smart mirror” for 6G terahertz links
A transparent, graphene-based reconfigurable intelligent surface steers THz beams for 6G, with a realistic design that accounts for losses and coupling between cells.