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Multi-walled carbon nanotubes of 200 nm diameter and carbon micro-balloons

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5 Author(s)
V. -T. Truong ; Maritime Platforms Division, Defence Science and Technology Organisation 506 Lorimer Street, Fishermans Bend VIC 3207, Australia ; P. J. McMahon ; C. L. Olsson-Jacques ; A. R. Wilson
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The growth of multi-walled carbon nanotubes (MWNTs) with a large diameter of 200 nm on nickel (Ni) coated silicon wafer at different growth times up to 30 min was investigated. CNT cobwebs were found after a short growth time (7 min) and developed into ordered forests at higher growth times (>; 10 min). One of the important formation features of the CNTs in this study was the coaxial structure of the nanotubes, ie. a MWNT within a MWNT. Its formation was due to secondary nanostructures of Ni particles. Unexpected growth of carbon micro-balloons occurred when high flow rates of carbon feedstock was used or when growth time exceeded 15 min.

Published in:

2010 International Conference on Nanoscience and Nanotechnology

Date of Conference:

22-26 Feb. 2010