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
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.
|Subjects:||Material Science > Nanofabrication processes and tools|
Physical Science > Nano objects
Material Science > Nanostructured materials
|Deposited By:||Anuj Seth|
|Deposited On:||13 Jan 2009 16:40|
|Last Modified:||20 Jan 2009 15:47|
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