Title

Electron emission from the side wall of an individual multiwall carbon nanotube

Authors

Authors

G. Y. Chai;L. Chow

Comments

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Abbreviated Journal Title

Carbon

Keywords

FIELD-EMISSION; EMITTERS; 1ST-PRINCIPLES; FABRICATION; FILMS; TIP; Chemistry, Physical; Materials Science, Multidisciplinary

Abstract

Electron emission from the sidewall of a bent individual multiwall carbon nanotube (CNT) is reported. The CNT was synthesized using a catalytic chemical vapor deposition method and the focused-ion beam technique was used to fabricate the CNT-based electron emitter. With controlled ion bombardment, individual carbon nanotubes can be bent into loops with different radii. An external electric field can be used to straighten the bent CNT. The electron field emission from the sidewall of CNT was measured, and compared with that from the tip of the CNT. The turn-on voltage from the sidewall of CNT is significantly lower than that from the tip. An enhancement factor P as large as 400,000 has been obtained for the electron emission from the side wall. (c) 2006 Elsevier Ltd. All rights reserved.

Journal Title

Carbon

Volume

45

Issue/Number

2

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

281

Last Page

284

WOS Identifier

WOS:000244270600008

ISSN

0008-6223

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