Simultaneous catalyst deposition and growth of aligned carbon nanotubes on SiO2/Si substrates by radio frequency magnetron sputtering (Articolo in rivista)

Type
Label
  • Simultaneous catalyst deposition and growth of aligned carbon nanotubes on SiO2/Si substrates by radio frequency magnetron sputtering (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.2818368 (literal)
Alternative label
  • Scalese S; Scuderi V; Privitera V; Pennisi A; Simone F (2007)
    Simultaneous catalyst deposition and growth of aligned carbon nanotubes on SiO2/Si substrates by radio frequency magnetron sputtering
    in Journal of applied physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Scalese S; Scuderi V; Privitera V; Pennisi A; Simone F (literal)
Pagina inizio
  • 114905-1 (literal)
Pagina fine
  • 114905-5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://jap.aip.org/resource/1/japiau/v102/i11/p114905_s1 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 102 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 11 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-IMM, Catania Università di Catania (literal)
Titolo
  • Simultaneous catalyst deposition and growth of aligned carbon nanotubes on SiO2/Si substrates by radio frequency magnetron sputtering (literal)
Abstract
  • Radio frequency magnetron sputtering has been used for the synthesis of aligned carbon nanotubes (CNTs)on a SiO2 / Si substrate, with simultaneous in situ catalyst deposition. This method allows the use of substrates without the need of a surface predeposition of catalytic particles. In particular, among the metals considered, we observed the formation of CNTs using W or Ni as catalysts. Only in the case of Ni did we find that the CNTs are aligned along the target-substrate direction, unlike the randomly oriented CNTs observed when W was used as catalyst. Scanning and transmission electron microscopies show that the catalytic Ni nanoparticle is found mostly on the tip of the obtained bamboolike CNTs, while W nanoparticles are encapsulated inside hollow nanotubes, at different points along their length.We ascribe not only the observed structural differences to the size of the W and Ni particles but also to a different diffusion behavior of C in the two kinds of metallic clusters. (literal)
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