Creating optical logic gates from graphene nanoribbons

https://phys.org/news/2023-11-optical-logic-gates-graphene-nanoribbons.html

"smaller (plasmon wavelengths shorter than for optical), energy efficient, secure, stable, and higher speeds benefiting AI... Y-shaped graphene nanoribbons bonded on top of insulation... plasmon waves, collective oscillations of electrons at interface between graphene and insulation, triggered by light waves in incoming optical signals and can also generate outgoing signals themselves after information processed by logic gate... high ratio between power level of gate's on-off states transmitting and blocking data"