title: Nanocrystalline metal/carbon composites produced by supersonic cluster beam deposition.
abstract: In this work we show that supersonic cluster beam deposition is a viable method for the synthesis of nanocrystalline metal/carbon composites. By assembling carbon and metallic clusters seeded in a supersonic beam, we have grown films consisting of metal nanoparticles embedded in a nano-structured carbon matrix. Samples containing 3d transition metals (Ti, Ni) and noble metals (Au, Pd, Pt) with different metal abundances, particle size and dilution have been characterized by transmission electron microscopy. The influence of different metals on the structure of the carbon matrix has been investigated. Spatially resolved ultraviolet photoemission electron spectroscopy showed substantial surface oxidation of 3d transition metal clusters. On a micrometric scale, the spatial distribution of the metallic nanoparticles appeared to be homogeneous.
authors.affiliation: INFM-Dipartimento di Fisica and CIMAINA, Università di Milano, Via Celoria 16, 20133 Milano, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Bongiorno
authors.forename: C
authors.initials: C
authors.lastname: Lenardi
authors.forename: C
authors.initials: C
authors.lastname: Ducati
authors.forename: R G
authors.initials: RG
authors.lastname: Agostino
authors.forename: T
authors.initials: T
authors.lastname: Caruso
authors.forename: M
authors.initials: M
authors.lastname: Amati
authors.forename: M
authors.initials: M
authors.lastname: Blomqvist
authors.forename: E
authors.initials: E
authors.lastname: Barborini
authors.forename: P
authors.initials: P
authors.lastname: Piseri
authors.forename: S
authors.initials: S
authors.lastname: La Rosa
authors.forename: E
authors.initials: E
authors.lastname: Colavita
authors.forename: P
authors.initials: P
authors.lastname: Milani
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D006046:Gold / Q000032:analysis; D008670:Metals; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D009532:Nickel / Q000032:analysis; D010100:Oxygen / Q000378:metabolism; D010165:Palladium / Q000032:analysis; D017785:Photons; D010984:Platinum / Q000032:analysis; D013499:Surface Properties; D014025:Titanium / Q000032:analysis; D014466:Ultraviolet Rays
chemical_list: D008670:Metals; D010984:Platinum; D010165:Palladium; D002244:Carbon; D006046:Gold; D009532:Nickel; D014025:Titanium; D010100:Oxygen