title: Size-selective nanoparticle growth on few-layer graphene films.
abstract: We observe that gold atoms deposited by physical vapor deposition onto few-layer graphenes condense upon annealing to form nanoparticles with an average diameter that is determined by the graphene film thickness. The data are well described by a theoretical model in which the electrostatic interactions arising from charge transfer between the graphene and the gold particle limit the size of the growing nanoparticles. The model predicts a nanoparticle size distribution characterized by a mean diameter D that follows a D proportional, variant m(1/3) scaling law where m is the number of carbon layers in the few-layer graphene film.
authors.affiliation: Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
authors.forename: Zhengtang
authors.initials: Z
authors.lastname: Luo
authors.forename: Luke A
authors.initials: LA
authors.lastname: Somers
authors.forename: Yaping
authors.initials: Y
authors.lastname: Dan
authors.forename: Thomas
authors.initials: T
authors.lastname: Ly
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Kybert
authors.forename: E J
authors.initials: EJ
authors.lastname: Mele
authors.forename: A T Charlie
authors.initials: AT
authors.lastname: Johnson
mesh_terms: D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D006108:Graphite / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008567:Membranes, Artificial; D008956:Models, Chemical; D008968:Molecular Conformation; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D055672:Static Electricity; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D008567:Membranes, Artificial; D006108:Graphite