The graphene, a single layer of carbon atoms in a hexagonal configuration, enjoys high carrier mobility, good biocompatibility and chemical stability. This paper briefly reviews the recent research progresses in the surface-enhanced Raman scattering (SERS) of graphene-metal nanoparticles (NPs) hybrid films, the excitation of graphene plasmons and the performance in sensing. In the visible region, the coupling between the graphene and the metal NPs allows the hybrid films to have enhanced absorption and much stronger electric field enhancement, and thus they can be used as highly sensitive SERS substrates. In the midinfrared region, the graphene plasmons can be excited by directly fabricating the graphene or fabricating the dielectric substrates with the help of guided-mode resonances, making them promising in refractive index sensing. In addition, the opportunities and challenges in this area are discussed.

graphene  /  metal nanoparticles  /  surface-enhanced Raman scattering  /  plasmonics  /  sensing