Accessing the fractal dimension of free clusters in supersonic beams (Articolo in rivista)

Type
Label
  • Accessing the fractal dimension of free clusters in supersonic beams (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/1367-2630/13/2/023009 (literal)
Alternative label
  • Mazza, T.; Devetta, M.; Milani, P.; Bongiorno, G.; Coreno, M.; Piseri, P. (2011)
    Accessing the fractal dimension of free clusters in supersonic beams
    in New journal of physics; IOP Publishing Ltd. (Institute of Physics Publishing Ltd), "Bristol ; London" (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Mazza, T.; Devetta, M.; Milani, P.; Bongiorno, G.; Coreno, M.; Piseri, P. (literal)
Pagina inizio
  • 023009 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 13 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 12 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • University of Milan; University of Milan; Consiglio Nazionale delle Ricerche (CNR) (literal)
Titolo
  • Accessing the fractal dimension of free clusters in supersonic beams (literal)
Abstract
  • In this paper a method for the quantitative determination of a morphology descriptor of free clusters with complex nanostructure is presented and applied to transition metal nanoparticles produced by a pulsed vaporization source. The method, which is based on the low-pressure aerodynamic mobility of neutral particles, can be applied as a characterization tool to a broad class of gas-phase nanoparticle sources for on-line investigation of particle growth and for quantifying coalescence versus agglomerate aggregation. We report on the application of this method for the characterization of free titanium clusters produced by a pulsed microplasma cluster source in the size range of approximately 300-6000 atoms. The clusters have an open fractal-like structure, with the fractal dimension depending on their thermal history during growth and evolving towards softer aggregates for longer residence times where lower-temperature conditions characterize the growth environment. (literal)
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