title: Blue and red shifts of interband transition energy in supported Au nanoclusters on SiO2 and HOPG investigated by reflection electron energy-loss spectroscopy.
abstract: Gold nanoclusters supported on SiO2 and HOPG are experimentally investigated by the reflection electron energy-loss spectroscopy. Two different trends in the size-dependence of the position of the energy-loss peak corresponding to the interband Au 5d --> 6s6p transition is observed: a blue shift for Au clusters on SiO2 and a red shift for Au clusters on HOPG. The different behaviors are qualitatively explained by the influence of the substrate on the spectrum of electronic states in Au nanoclusters.
authors: National Research Nuclear University "MEPhl", 31 Kashirskoe Chausse, Moscow 115409, Russia.
authors: P V
authors: PV
authors: Borisyuk
authors: V I
authors: VI
authors: Troyan
authors: M A
authors: MA
authors: Pushkin
authors: V D
authors: VD
authors: Borman
authors: V N
authors: VN
authors: Tronin
mesh_terms: D003116:Color; D004735:Energy Transfer; D006046:Gold / Q000737:chemistry*; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D012822:Silicon Dioxide / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D006046:Gold; D012822:Silicon Dioxide