Crystal plane dependent growth of aligned single-walled carbon nanotubes on sapphire

Naoki Ishigami, Hiroki Ago, Kenta Imamoto, Masaharu Tsuji, Konstantin Iakoubovskii, Nobutsugu Minami

    Research output: Contribution to journalArticle

    105 Citations (Scopus)

    Abstract

    On single-crystal substrates, such as sapphire (α-Al 2O3) and quartz (SiO2), single-walled carbon nanotubes (SWNTs) align along specific crystallographic axes of the crystal, indicating that the SWNT growth is influenced by the crystal surface. Here, we show that not only the orientation, but also the diameter and chirality of SWNTs are affected by the crystal plane of the sapphire substrate. The aligned SWNTs grown on the A- and R-planes of sapphire have narrower diameter distributions than randomly oriented tubes produced on the C-plane sapphire and amorphous SiO2. Photoluminescence measurements reveal a striking difference between the aligned SWNTs: near-zigzag tubes are observed on the A-plane and near-armchair tubes on the R-plane. This study shows the route for the diameter and chirality control of SWNTs by surface atomic arrangements of a single-crystal substrate.

    Original languageEnglish
    Pages (from-to)9918-9924
    Number of pages7
    JournalJournal of the American Chemical Society
    Volume130
    Issue number30
    DOIs
    Publication statusPublished - Jul 30 2008

    Fingerprint

    Carbon Nanotubes
    Aluminum Oxide
    Single-walled carbon nanotubes (SWCN)
    Sapphire
    Crystals
    Growth
    Chirality
    Substrates
    Single crystals
    Quartz
    Photoluminescence

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)

    Cite this

    Crystal plane dependent growth of aligned single-walled carbon nanotubes on sapphire. / Ishigami, Naoki; Ago, Hiroki; Imamoto, Kenta; Tsuji, Masaharu; Iakoubovskii, Konstantin; Minami, Nobutsugu.

    In: Journal of the American Chemical Society, Vol. 130, No. 30, 30.07.2008, p. 9918-9924.

    Research output: Contribution to journalArticle

    Ishigami, Naoki ; Ago, Hiroki ; Imamoto, Kenta ; Tsuji, Masaharu ; Iakoubovskii, Konstantin ; Minami, Nobutsugu. / Crystal plane dependent growth of aligned single-walled carbon nanotubes on sapphire. In: Journal of the American Chemical Society. 2008 ; Vol. 130, No. 30. pp. 9918-9924.
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    AU - Ago, Hiroki

    AU - Imamoto, Kenta

    AU - Tsuji, Masaharu

    AU - Iakoubovskii, Konstantin

    AU - Minami, Nobutsugu

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