Researchers from the University of California have used a beam of infrared light to send ripples of electrons along the surface of graphene. The length of heights of the plasmons oscillations can be controlled using a simple electrical circuit.

It was already suspected that plasmons will be present on graphene, but this is the first real demonstration. The actual device used is a sheet of graphene on a silicon dioxide chip.

Plasmons could be used to transmit information, within far tighter spaces compared to light (i.e. at nanometer scales).

The researchers used high quality graphene produced by Graphenea.



Source: 
Tags: