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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