Nucleation stages of carbon nanotubes on SiC(0001) by surface decomposition

Kenjiro Hayashl, Seigi Mizuno, Tanaka Satoru, Hiroki Toyoda, Hiroshi Tochihara, Ikuo Suemune

    研究成果: ジャーナルへの寄稿記事

    10 引用 (Scopus)

    抄録

    Nucleation stages of carbon nanotubes (CNTs) on a SiC(0001) Si-face (4° off toward [112̄0]) by surface decomposition are investigated by means of in-situ scanning tunneling microscopy (STM). After a relatively short heating time at 1600°C, moiré patterns and small nuclei appear on the surface due to the evaporation of Si atoms and, as a result of this, surface graphitization. Modelling of the moiré pattern indicates the formation of a single graphene sheet on top of the SiC surface. Local swelling (∼1 nm in diameter) of such a graphene sheet, possibly resulting from the compressive stress at the graphene/ SiC interface, gives rise to a CNT nucleus. In the stages that follow, the nucleus is continuously and unidirectionally prolonged and rolled-up, which may result in a final form such as a CNT.

    元の言語英語
    ジャーナルJapanese Journal of Applied Physics, Part 2: Letters
    44
    発行部数24-27
    DOI
    出版物ステータス出版済み - 6 24 2005

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    Carbon nanotubes
    Nucleation
    carbon nanotubes
    nucleation
    Graphene
    Decomposition
    decomposition
    graphene
    nuclei
    Graphitization
    graphitization
    Scanning tunneling microscopy
    Compressive stress
    swelling
    Swelling
    scanning tunneling microscopy
    Evaporation
    evaporation
    Heating
    Atoms

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

    これを引用

    Nucleation stages of carbon nanotubes on SiC(0001) by surface decomposition. / Hayashl, Kenjiro; Mizuno, Seigi; Satoru, Tanaka; Toyoda, Hiroki; Tochihara, Hiroshi; Suemune, Ikuo.

    :: Japanese Journal of Applied Physics, Part 2: Letters, 巻 44, 番号 24-27, 24.06.2005.

    研究成果: ジャーナルへの寄稿記事

    Hayashl, Kenjiro ; Mizuno, Seigi ; Satoru, Tanaka ; Toyoda, Hiroki ; Tochihara, Hiroshi ; Suemune, Ikuo. / Nucleation stages of carbon nanotubes on SiC(0001) by surface decomposition. :: Japanese Journal of Applied Physics, Part 2: Letters. 2005 ; 巻 44, 番号 24-27.
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    abstract = "Nucleation stages of carbon nanotubes (CNTs) on a SiC(0001) Si-face (4° off toward [112̄0]) by surface decomposition are investigated by means of in-situ scanning tunneling microscopy (STM). After a relatively short heating time at 1600°C, moir{\'e} patterns and small nuclei appear on the surface due to the evaporation of Si atoms and, as a result of this, surface graphitization. Modelling of the moir{\'e} pattern indicates the formation of a single graphene sheet on top of the SiC surface. Local swelling (∼1 nm in diameter) of such a graphene sheet, possibly resulting from the compressive stress at the graphene/ SiC interface, gives rise to a CNT nucleus. In the stages that follow, the nucleus is continuously and unidirectionally prolonged and rolled-up, which may result in a final form such as a CNT.",
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    AU - Mizuno, Seigi

    AU - Satoru, Tanaka

    AU - Toyoda, Hiroki

    AU - Tochihara, Hiroshi

    AU - Suemune, Ikuo

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