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

    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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