Probing the dielectric response of graphene via dual-band plasmonic nanoresonators - Xiao, Y; Francescato, Y; Giannini, V; Rahmani, M; Roschuk, TR; Gilbertson, AM; Sonnefraud, Y; Mattevi, C; Hong, M; Cohen, LF; Maier, SA (PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013)