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Field emission patterns from multiwall carbon nanotubes with a cone-shaped tip
Saito, Yahachi
19194
Tsujimoto, Yuhki
19195
Koshio, Akira
19196
Kokai, Fumio
19197
Electron emission from multiwall carbon nanotubes (CNTs) with a cone-shaped tip, on the apex of which five pentagons are present, has been studied by field emission microscopy (FEM). Two types of FEM patterns were observed: one is a well-defined “pentagon” pattern that is typically observed for ordinal multiwall CNTs though the number of pentagons is five in the case of cone-shaped CNTs, and the other is a “dim” pattern that is usually observed for single-wall CNTs. Appearance voltages of the respective patterns and transmission electron microscopy study of the cone-shaped CNTs suggest that the pentagon patterns originate from CNTs with apex radii larger than approximately 2 nm while the dim patterns originate from those with the smaller apex radii.
journal article
American Institute of Physics
2007-05-21
application/pdf
APPLIED PHYSICS LETTERS
21
90
213108
213108
http://hdl.handle.net/2237/8776
0003-6951
https://nagoya.repo.nii.ac.jp/record/7102/files/AppPhysLett_90-213108.pdf
eng
https://doi.org/10.1063/1.2742637
Copyright (2007) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.