Modes of nanotube growth in plasmas and reasons for single-walled structure
Levchenko, I., Ostrikov, K., Keidar, M., & Cvelbar, U. (2008) Modes of nanotube growth in plasmas and reasons for single-walled structure. Journal of Physics D: Applied Physics, 41(13), pp. 132004-1.
The conditions for carbon nanotube synthesis in the bulk of arc discharges and on plasma-exposed solid surfaces are compared to reveal the main distinguishing features of the growth kinetics and explain the striking difference between the growth of the nanotubes in both cases. It is shown that this difference is due to very different exposure of the discharge-synthesized and surface-bound nanotubes to ion fluxes, with the ratio of the ion fluxes collected per nanotube in the two cases reaching up to six orders of magnitude. Depending on the plasma parameters and the sizes of the nanotubes and metal catalyst particles, four distinct growth modes of the nanotubes in the plasma bulk have been identified. These results shed light on why single-walled carbon nanotube growth is more favourable in the bulk of arc plasmas rather than on plasma-exposed surfaces.
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|Item Type:||Journal Article|
|Divisions:||Current > QUT Faculties and Divisions > Science & Engineering Faculty|
|Deposited On:||16 Jul 2014 00:24|
|Last Modified:||16 Jul 2014 22:53|
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