Spatially-resolved EEL studies of plasmons in silver filled carbon nanotubes using a dedicated STEM

U. Bangert, A. J. Harvey, A. Seepujak

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Using a dedicated FEG STEM, we present highly spatially-resolved electron energy-loss (EEL) studies of individual multi-walled carbon nanotubes (MWCNTs), each with the inner cavity possessing regions completely filled with silver. The transmission and attenuation of graphite π-collective mode E-fields through the MWCNT walls are established. Noticeable changes in the graphite π-surface mode are witnessed, concomitant with coupling of the silver Mie mode and the graphite π-surface mode. The resulting collective mode is significantly red-shifted to below 5 eV, with considerable intensity in the visible frequency regime. It appears that silver retains its ability to enhance E-fields when surrounded by a MWCNT. Present observations lead to the possibility of collective modes propagating on graphene monolayers being tuned in frequency by the presence of a metal. © 2008 IOP Publishing Ltd.
    Original languageEnglish
    Title of host publicationJournal of Physics: Conference Series|J. Phys. Conf. Ser.
    PublisherIOP Publishing Ltd
    Volume126
    DOIs
    Publication statusPublished - 2008
    EventElectron Microscopy and Analysis Group Conference - Glasgow, SCOTLAND
    Duration: 3 Sept 20077 Sept 2007

    Conference

    ConferenceElectron Microscopy and Analysis Group Conference
    CityGlasgow, SCOTLAND
    Period3/09/077/09/07

    Keywords

    • Nanoscience & Nanotechnology
    • Materials Science, Multidisciplinary
    • Physics, Applied

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