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Tensile Tests on Individual Single-Walled Carbon Nanotubes: Linking Nanotube Strength with Its Defects

Authors

  • Ming-Sheng Wang,

    Corresponding author
    1. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 3050044 (Japan)
    • 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. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 3050044 (Japan)
    • 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. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1–1, Tsukuba, Ibaraki 3050044 (Japan)
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Abstract

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Theultimate tensile strength of individual single-walled carbon nanotubes (CNTs) is measured in a high-resolution TEM equipped with a conducting AFM unit. The values are correlated to every tube’s structural details. The strength of ∼100 GPa, approaching the theoretical limit for defect-free CNTs, is documented in tubes without visible defects; for those with spatially separated stepwise pentagon-heptagon defects, determining the breaking sites, it reduces to 40–70 GPa.

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