Journal of Science: Advanced Materials and Devices 2
, 371-377 (2017)
Plasmonic properties of graphene-based nanostructures in terahertz waves
Do T. Nga, Do C. Nghia, Chu V. Ha
We theoretically study the plasmonic properties of graphene on bulk substrates and graphene-coated
nanoparticles. The surface plasmons of such systems are strongly dependent on bandgap and Fermi
level of graphene that can be tunable by applying external fields or doping. An increase of bandgap
prohibits the surface plasmon resonance for GHz and THz frequency regime. While increasing the Fermi
level enhances the absorption of the graphene-based nanostructures in these regions of wifi-waves.
Some mechanisms for electric-wifi-signal energy conversion devices are proposed. Our results have a
good agreement with experimental studies and can pave the way for designing state-of-the-art electric
graphene-integrated nanodevices that operate in the GHzeTHz radiation.