Low- and high-temperature controls in carbon nanofiber growth in reactive plasmas

Mehdipour, H., Ostrikov, K., & Rider, A.E. (2010) Low- and high-temperature controls in carbon nanofiber growth in reactive plasmas. Nanotechnology, 21(45), pp. 455605-1.

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Abstract

A numerical growth model is used to describe the catalyzed growth of carbon nanofibers in the sheath of a low-temperature plasma. Using the model, the effects of variation in the plasma sheath parameters and substrate potential on the carbon nanofiber growth characteristics, such as the growth rate, the effective carbon flux to the catalyst surface, and surface coverages, have been investigated. It is shown that variations in the parameters, which change the sheath width, mainly affect the growth parameters at the low catalyst temperatures, whereas the other parameters such as the gas pressure, ion temperature, and percentages of the hydrocarbon and etching gases, strongly affect the carbon nanofiber growth at higher temperatures. The conditions under which the carbon nanofiber growth can still proceed under low nanodevice-friendly process temperatures have been formulated and summarized. These results are consistent with the available experimental results and can also be used for catalyzed growth of other high-aspect-ratio nanostructures in low-temperature plasmas.

Impact and interest:

7 citations in Scopus
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12 citations in Web of Science®

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ID Code: 73789
Item Type: Journal Article
Refereed: Yes
Additional URLs:
DOI: 10.1088/0957-4484/21/45/455605
ISSN: 0957-4484
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 11 Jul 2014 02:07
Last Modified: 14 Jul 2014 00:31

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