  Ultraviolet (UV) electro-optic modulation system based on graphene-plasmonic
metamaterials nanomechanical system (NEMS) with superlubricity is investigated.
Due to the strong optical absorption intensity of graphene in the UV region and
the combination of metamaterial structure based on surface plasmons, the
modulation depth of the UV NEMS electro-optic modulator approaches as high as
8.5 times compared to the counterpart modulator in visible light region.
Meanwhile, the superlubricity significantly reduces the power consumption of
the UV electro-optic modulation system due to its extremely low friction
coefficient. It also significantly improves the response speed of the
modulator, which can reach the order of a nanosecond. The modulation voltage
can be lower than 200 mV. The proposed electro-optic modulation system has a
simple structure and high sensitivity, which is supposed to have important
applications in UV optoelectronic devices and systems.
