Field emission from multiwall carbon nanotubes prepared by electrodeposition without the use of a dispersant

SM Lyth, F Oyeleye, RJ Curry, J Davis, SRP Silva

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    We present a technique of manufacturing multiwall carbon nanotube (MWNT) field emitters by a nickel electrodeposition process, without using a surfactant to disperse the MWNTs in solution. Sonication adequately disperses individual MWNTs throughout the solution and MWNTs can be deposited onto a copper substrate. However, over time there is a reduction of the free MWNT concentration in solution and an associated change in the morphology of the deposit. The initial concentration of MWNTs in solution also plays a crucial role in the morphology of the deposits. The threshold field of electron field emission measurements remained in the order of 20 V/mu m regardless of the deposition conditions. (c) 2006 American Vacuum Society.
    LanguageEnglish
    Pages1362-1364
    JournalJOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
    Volume24
    Issue number3
    DOIs
    Publication statusPublished - May 2006

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    Carbon Nanotubes
    Electrodeposition
    Field emission
    Deposits
    Sonication
    Nickel
    Surface-Active Agents
    Copper
    Vacuum
    Electrons
    Substrates

    Cite this

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    title = "Field emission from multiwall carbon nanotubes prepared by electrodeposition without the use of a dispersant",
    abstract = "We present a technique of manufacturing multiwall carbon nanotube (MWNT) field emitters by a nickel electrodeposition process, without using a surfactant to disperse the MWNTs in solution. Sonication adequately disperses individual MWNTs throughout the solution and MWNTs can be deposited onto a copper substrate. However, over time there is a reduction of the free MWNT concentration in solution and an associated change in the morphology of the deposit. The initial concentration of MWNTs in solution also plays a crucial role in the morphology of the deposits. The threshold field of electron field emission measurements remained in the order of 20 V/mu m regardless of the deposition conditions. (c) 2006 American Vacuum Society.",
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    Field emission from multiwall carbon nanotubes prepared by electrodeposition without the use of a dispersant. / Lyth, SM; Oyeleye, F; Curry, RJ; Davis, J; Silva, SRP.

    In: JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, Vol. 24, No. 3, 05.2006, p. 1362-1364.

    Research output: Contribution to journalArticle

    TY - JOUR

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    AU - Lyth, SM

    AU - Oyeleye, F

    AU - Curry, RJ

    AU - Davis, J

    AU - Silva, SRP

    PY - 2006/5

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    AB - We present a technique of manufacturing multiwall carbon nanotube (MWNT) field emitters by a nickel electrodeposition process, without using a surfactant to disperse the MWNTs in solution. Sonication adequately disperses individual MWNTs throughout the solution and MWNTs can be deposited onto a copper substrate. However, over time there is a reduction of the free MWNT concentration in solution and an associated change in the morphology of the deposit. The initial concentration of MWNTs in solution also plays a crucial role in the morphology of the deposits. The threshold field of electron field emission measurements remained in the order of 20 V/mu m regardless of the deposition conditions. (c) 2006 American Vacuum Society.

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