Plasmonic graphene has been fabricated by G. Xu et al. using thermally assisted self-assembly of Ag nanoparticles on graphene. The localized surface-plasmonic effect is demonstrated with the resonance frequency shifting from 446 to 495 nm when the lateral dimension of the Ag nanopar-ticles increases from about 50 to 150 nm. Both the resonance frequency and amplitude decrease with increasing graphene thickness. In addition, plasmonic graphene shows much improved electrical conductance by a factor of 2–4 as compared to the original graphene.