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.
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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|Item Type:||Journal Article|
|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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