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Advanced Materials

Interface Dynamic Behavior Between a Carbon Nanotube and Metal Electrode

Authors

  • Ming-Sheng Wang,

    Corresponding author
    1. World Premier International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Namiki 1-1, Tsukuba, Ibaraki 3050044 (Japan)
    • World Premier International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Namiki 1-1, Tsukuba, Ibaraki 3050044 (Japan).
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  • Dmitri Golberg,

    Corresponding author
    1. World Premier International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Namiki 1-1, Tsukuba, Ibaraki 3050044 (Japan)
    • World Premier International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Namiki 1-1, Tsukuba, Ibaraki 3050044 (Japan).
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  • Yoshio Bando

    1. World Premier International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) Namiki 1-1, Tsukuba, Ibaraki 3050044 (Japan)
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Abstract

Interface dynamic behavior between individual carbon nanotubes (CNTs) and tungsten (W) electrodes is observed directly at a nearly atomic resolution. The W tip-end absorbs the source CNT atoms, which then penetrate deep into its body, form a carbide, and finally precipitate as freshly formed graphitic tubular shells encapsulating the electrode. CNT wall-thickness shaping via stepwise absorption of the nanotube core shells into a W electrode is demonstrated for the first time. This work provides novel one-dimensional CNT–carbide–metal hetero-junctions, as well as new and detailed understanding of the CNT catalytic growth.

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