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Träfflista för sökning "(WFRF:(Campbell Eleanor E B 1960)) srt2:(2005)"

Sökning: (WFRF:(Campbell Eleanor E B 1960)) > (2005)

  • Resultat 1-10 av 27
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  • Gromov, Andrei, 1959, et al. (författare)
  • Covalent Amino functionalisation of single walled carbon nanotubes
  • 2005
  • Ingår i: J. Materials Chem. - : Royal Society of Chemistry (RSC). - 0959-9428 .- 1364-5501. ; 15, s. 3334-3339
  • Tidskriftsartikel (refereegranskat)abstract
    • Chemical transformation of single-wall carbon nanotubes (SWNT), edge-terminated with carboxylic groups, to SWNT species with amino groups directly attached to the tube open ends has been performed. Different synthetic approaches have been investigated. The reaction products were characterised by FTIR, Raman spectroscopy, XPS and SEM.
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  • Kabir, Mohammad, 1974, et al. (författare)
  • Plasma-enhanced chemical vapour deposition growth of carbon nanotubes on different metal underlayers
  • 2005
  • Ingår i: Nanotechnology. - : IOP Publishing. - 0957-4484 .- 1361-6528. ; 16, s. 458-466
  • Tidskriftsartikel (refereegranskat)abstract
    • One important requirement for future applications of carbon nanotube electronic devices is the ability to controllably grow carbon nanotubes on metal electrodes. Here we show that it is possible to grow small diameter (<10 nm) vertically aligned carbon nanotubes on different metal underlayers using plasma-enhanced chemical vapour deposition. A crucial component is the insertion of a thin silicon layer between the metal and the catalyst particle. The electrical integrity of the metal electrode layer after plasma treatment and the quality of the metals as interconnects are also investigated.
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  • Sveningsson, Martin, 1977, et al. (författare)
  • Quantifying temperature-enhanced electron field emission from individual carbon nanotubes
  • 2005
  • Ingår i: Physical Review B. - : American Physical Society. ; 72:8
  • Tidskriftsartikel (refereegranskat)abstract
    • The electron field emission properties of individual multiwalled carbon nanotubes have been examined using a combined STM-TEM microscope. The measured electron emission, for low emission currents, can be fitted with a standard Fowler-Nordheim model. For higher electron emission, above 10 µA for an individual carbon nanotube, we observe a significantly increased emission current leading to a nonlinear Fowler-Nordheim plot. The nonlinearity is caused by thermally enhanced electron emission due to Ohmic heating of the carbon nanotube. This is verified by modeling the electron field emission current. In addition to the influence of radiative cooling and the temperature dependence of the nanotube resistivity, we clearly show that a consideration of the temperature change due to the electron emission process itself, known as the Nottingham effect, is crucial to obtain good agreement with the experimental data.
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  • Yao, Yiming, 1957, et al. (författare)
  • Cross sectional TEM investigation of Ni-catalysed carbon nanotube films grown by plasma enhanced CVD
  • 2005
  • Ingår i: Journal of Microscopy. - : Wiley. - 0022-2720 .- 1365-2818. ; 219, s. 69-75
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Nickel-catalysed multiwall carbon nanotubes synthesized by plasma-enhanced chemical vapour deposition on a silicon substrate with acetylene and ammonia at 700 °C have been characterized by high-resolution and analytical transmission electron microscopy. The nucleation of the carbon nanotubes occurs as a consequence of the carburization and dusting of supported preformed nickel- and silicon-rich particles. This process yields disintegrated silicon-containing nickel particles dispersed in dome-shaped carbon islands adherent to the substrate. The particles act as catalysts for tube growth, resulting in aligned multiwall carbon nanotubes with a bamboo-like structure anchored to the dome-shaped carbon islands. The bottom part of the carbon islands contains bundles of graphene sheets orientated parallel to the substrate. The nanotubes are capped with fcc nickel particles containing dissolved silicon. Most of these particles have a conical shape orientated with a <110> direction along the tube growth axis, and with {110} and {111} planes as exposed faces.
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  • Resultat 1-10 av 27
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