In a new study an international research team led by
the University of Vienna has shown that structures built around a
single layer of graphene allow for strong optical nonlinearities
that can convert light. The team achieved this by using
nanometer-sized gold ribbons to squeeze light, in the form of
plasmons, into atomically-thin graphene. The results, which are
published in Nature Nanotechnology are promising for a new family
of ultra-small tunable nonlinear devices.