Field Emission Patterns Originating from Pentagons at the Tip of a Carbon Nanotube
- 1 April 2000
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 39 (4A) , L271
- https://doi.org/10.1143/jjap.39.l271
Abstract
Field emission of electrons from multiwall carbon nanotubes (MWCNTs) has been investigated in ultra-high vacuum by field emission microscopy (FEM). MWCNTs whose tips are capped by curved graphite layers give FEM patterns consisting of 6 bright pentagons, each of which has a dark region in its center. Interference fringes are also observed between adjacent pentagonal rings. The present result shows a direct evidence of the presence of 6 pentagons on a tip of a closed carbon nanotube.Keywords
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