Nucleation and growth of single wall carbon nanotubes

Details Nucleation and growth of single wall carbon nanotubes Nucleation and growth of single wall carbon nanotubes

2005-09-15

arxiv.org/abs/cond-mat/0509400v1

Solid State Communications 136 (2005) 462

Physics

Condensed Matter

Materials Science

Solid state communications, in press

Scientific paper

10.1016/j.ssc.2005.09.007

The nucleation and growth of single wall carbon nanotubes from a carbon-saturated catalytic particle surrounded by a single sheet of graphene is described qualitatively by using a very restricted number of elementary processes, namely Stone-Wales defects and carbon bi-interstitials. Energies of the different configurations are estimated by using a Tersoff energy minimization scheme. Such a description is compatible with a broad variety of size or helicity of the tubes. Several mechanisms of growth of the embryos are considered: one of them is made more favourable when the tubes embryos are arranged in an hexagonal network in the graphene plane. All the proposed mechanisms can be indefinitely repeated for the growth of the nanotubes.

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