Growth of carbon nanocone arrays on a metal catalyst: The effect of carbon flux ionization

Levchenko, I., Ostrikov, K., Khachan, J., & Vladimirov, S.V. (2008) Growth of carbon nanocone arrays on a metal catalyst: The effect of carbon flux ionization. Physics of Plasmas, 15(10), pp. 103501-1.

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The growth of carbon nanocone arrays on metal catalyst particles by deposition from a low-temperature plasma is studied by multiscale Monte Carlo/surface diffusion numerical simulation. It is demonstrated that the variation in the degree of ionization of the carbon flux provides an effective control of the growth kinetics of the carbon nanocones, and leads to the formation of more uniform arrays of nanostructures. In the case of zero degree of ionization (neutral gas process), a width of the distribution of nanocone heights reaches 360 nm with the nanocone mean height of 150 nm. When the carbon flux of 75% ionization is used, the width of the distribution of nanocone heights decreases to 100 nm, i.e., by a factor of 3.6. A higher degree of ionization leads to a better uniformity of the metal catalyst saturation and the nanocone growth, thus contributing to the formation of more height-uniform arrays of carbon nanostructures.

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12 citations in Scopus
13 citations in Web of Science®
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42 since deposited on 15 Jul 2014
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ID Code: 73967
Item Type: Journal Article
Refereed: Yes
Additional URLs:
DOI: 10.1063/1.2988781
ISSN: 1070-664X
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2008 American Institute of Physics
Deposited On: 15 Jul 2014 04:35
Last Modified: 22 Jun 2017 00:01

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