Single-walled carbon nanotube networks for ethanol vapor sensing applications

I.V. Anoshkin (Corresponding Author), A.G. Nasibulin (Corresponding Author), P.R. Mudimela, M. He, Vladimir Ermolov, E.I. Kauppinen

    Research output: Contribution to journalArticleScientificpeer-review

    28 Citations (Scopus)

    Abstract

    Networks of pristine high quality single walled carbon nanotubes (SWNTs), the SWNTs after Ar-plasma treatment (from 2 to 12 min) and carbon nanobuds (CNBs) have been tested for ethanol vapor sensing. It was found that the pristine high quality SWNTs do not exhibit any ethanol sensitivity, while the introduction of defects in the tubes results in the appearance of the ethanol sensitivity. The CNB network showed ethanol sensitivity without plasma treatment. Both CNB and low defect (after 3 min treatment) SWNT networks exhibit significant drift in the resistance baseline, while heavily plasma-treated (9 min) SWNTs exhibited high ethanol vapor sensitivity without the baseline change. The mechanisms of the ethanol sensitivity and stability after the plasma irradiation are attributed to the formation of sensitive dangling bonds in the SWNTs and formation of defect channels facilitating access of the ethanol vapor to all parts of the bundled nanotubes.
    Original languageEnglish
    Pages (from-to)77-86
    Number of pages10
    JournalNano Research
    Volume6
    Issue number2
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Ar-plasma
    • carbon nanobuds
    • ethanol vapor sensor
    • nanotubes
    • single walled carbon

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