Angular distribution of carbon ion flux in a nanotube array during the plasma process by the Monte Carlo technique

Levchenko, I., Ostrikov, K., Keidar, M., & Vladimirov, S.V. (2007) Angular distribution of carbon ion flux in a nanotube array during the plasma process by the Monte Carlo technique. Physics of Plasmas, 14(11), pp. 113504-1.

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Abstract

Angular distribution of microscopic ion fluxes around nanotubes arranged into a dense ordered pattern on the surface of the substrate is studied by means of multiscale numerical simulation. The Monte Carlo technique was used to show that the ion current density is distributed nonuniformly around the carbon nanotubes arranged into a dense rectangular array. The nonuniformity factor of the ion current flux reaches 7 in dense (5× 1018 m-3) plasmas for a nanotube radius of 25 nm, and tends to 1 at plasma densities below 1× 1017 m-3. The results obtained suggest that the local density of carbon adatoms on the nanotube side surface, at areas facing the adjacent nanotubes of the pattern, can be high enough to lead to the additional wall formation and thus cause the single- to multiwall structural transition, and other as yet unexplained nanoscience phenomena.

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3 citations in Scopus
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6 citations in Web of Science®

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ID Code: 74029
Item Type: Journal Article
Refereed: Yes
Additional URLs:
DOI: 10.1063/1.2806329
ISSN: 1070-664X
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2007 American Institute of Physics
Deposited On: 16 Jul 2014 04:55
Last Modified: 17 Jul 2014 03:08

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