Microstructure of Au nanoclusters formed in and on SiO2 (Articolo in rivista)

Type
Label
  • Microstructure of Au nanoclusters formed in and on SiO2 (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.spmi.2008.01.001 (literal)
Alternative label
  • Ruffino, F; Grimaldi, MG; Bongiorno, C; Giannazzo, F; Roccaforte, E; Raineri, V (2008)
    Microstructure of Au nanoclusters formed in and on SiO2
    in Superlattices and microstructures; Academic Press Ltd., Elsevier Science Ltd., London (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ruffino, F; Grimaldi, MG; Bongiorno, C; Giannazzo, F; Roccaforte, E; Raineri, V (literal)
Pagina inizio
  • 588 (literal)
Pagina fine
  • 598 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 44 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Ruffino, F.; Grimaldi, M. G.] Univ Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy; [Ruffino, F.; Grimaldi, M. G.] MATIS CNR INFM, Rome, Italy; [Bongiorno, C.; Giannazzo, F.; Roccaforte, E.; Raineri, V.] CNR IMM, I-95121 Catania, Italy (literal)
Titolo
  • Microstructure of Au nanoclusters formed in and on SiO2 (literal)
Abstract
  • Au nanocrystals dispersed in or on an amorphous SiO2 substrate were formed by a self-organization procedure based on sputtering deposition and subsequent annealing. The kinetic mechanisms of the Au nanocrystals self-organization induced by the annealing processes were studied by transmission electron microscopy. A clear difference between the Au nanocrystals growth in and on SiO2 was found: in either cases the growth process was a ripening mechanism limited by diffusion but with a different growth rate. On the other hand, high-resolution transmission electron microscopy analyses allowed us to study the nanocrystals equilibrium shape and internal atomic structure evidencing a strong influence of the surrounding environment. Quantitative data on the cluster surface free energy were obtained via the inverse Wulff construction. An angular and radial symmetric surface free energy function for nanocrystals isotropically surrounded (Au nanocrystals in SiO2) was found, determining symmetric nanocrystals equilibrium shapes. An angular and radial asymmetrical surface free energy function for nanocrystals anisotropically surrounded (Au nanocrystals on SiO2) was found, determining asymmetrical nanocrystals equilibrium shapes. (C) 2008 Elsevier Ltd. All rights reserved. (literal)
Editore
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Editore di
Insieme di parole chiave di
data.CNR.it