title: Far-infrared graphene plasmonic crystals for plasmonic band engineering.
abstract: We introduce far-infrared graphene plasmonic crystals. Periodic structural perturbation-in a proof-of-concept form of hexagonal lattice of apertures-of a continuous graphene medium alters delocalized plasmonic dynamics, creating plasmonic bands in a manner akin to photonic crystals. Fourier transform infrared spectroscopy demonstrates band formation, where far-infrared irradiation excites a unique set of plasmonic bands selected by phase matching and symmetry-based selection rules. This band engineering may lead to a new class of graphene plasmonic devices.
authors.affiliation: School of Engineering and Applied Sciences, Harvard University , Cambridge, Massachusetts 02138, United States.
authors.forename: Kitty Y M
authors.initials: KY
authors.lastname: Yeung
authors.forename: Jingyee
authors.initials: J
authors.lastname: Chee
authors.forename: Hosang
authors.initials: H
authors.lastname: Yoon
authors.forename: Yi
authors.initials: Y
authors.lastname: Song
authors.forename: Jing
authors.initials: J
authors.lastname: Kong
authors.forename: Donhee
authors.initials: D
authors.lastname: Ham