Nano Archive

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

Levchenko, I. and Ostrikov, K. and Long, J. D. and Xu, S. (2007) Plasma-assisted self-sharpening of platelet-structured single-crystalline carbon nanocones. APPLIED PHYSICS LETTERS, 91 (11).

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Official URL: http://link.aip.org/link/?APPLAB/91/113115/1

Abstract

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.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Physical Science > Nano objects
Material Science > Nanostructured materials
ID Code:3250
Deposited By:Anuj Seth
Deposited On:13 Jan 2009 16:40
Last Modified:20 Jan 2009 15:47

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