Plasma-assisted self-sharpening of platelet-structured single-crystalline carbon nanocones

Levchenko, I., Ostrikov, K., Long, J. D., & Xu, S. (2007) Plasma-assisted self-sharpening of platelet-structured single-crystalline carbon nanocones. Applied Physics Letters, 91(11), pp. 113115-1.

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A mechanism and model for the vertical growth of platelet-structured vertically aligned single-crystalline carbon nanostructures by the formation of graphene layers on a flat top surface are proposed and verified experimentally. It is demonstrated that plasma-related effects lead to self-sharpening of tapered nanocones to form needlelike nanostructures, in a good agreement with the predicted dependence of the radius of a nanocone's flat top on the incoming ion flux and surface temperature. The growth mechanism is relevant to a broad class of nanostructures including nanotips, nanoneedles, and nanowires and can be used to improve the predictability of nanofabrication processes. © 2007 American Institute of Physics.

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ID Code: 73770
Item Type: Journal Article
Refereed: Yes
Keywords: Carbon, Nanostructures, Graphene
DOI: 10.1063/1.2784932
ISSN: 0003-6951
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: 2007 American Institute of Physics
Deposited On: 11 Jul 2014 01:00
Last Modified: 22 Aug 2014 01:12

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