Atomic-Resolution Imaging of the Nucleation Points of Single-Walled Carbon Nanotubes

Authors

  • Hongwei Zhu Dr.,

    1. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan, Fax: (+1) 225-578-5200
    2. Current address: Department of Electrical & Computer Engineering and Center for Computation & Technology, Louisiana State University, Baton Rouge, LA 70803, USA
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  • Kazutomo Suenaga Dr.,

    1. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan, Fax: (+1) 225-578-5200
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  • Ayako Hashimoto Dr.,

    1. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan, Fax: (+1) 225-578-5200
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  • Kouki Urita Dr.,

    1. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan, Fax: (+1) 225-578-5200
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  • Kenji Hata Dr.,

    1. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan, Fax: (+1) 225-578-5200
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  • Sumio Iijima Prof.

    1. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan, Fax: (+1) 225-578-5200
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  • Electron microscopy work was supported by the NEDO Nano-carbon Technology Project. This work is also partially conducted in the AIST Nano-Processing Facility, supported by the “Nanotechnology Support Project” of the Ministry of Education, Culture, Sports, Science and Technology (MEXT) (Japan).

Abstract

original image

Points of view: The nucleation points of single-walled carbon nanotubes (SWNTs) are visualized on the atomic scale. The atomic structure of both the catalysts and the SWNTs growing from them are seen by HRTEM (see Figure) for the first time. The growth pathway extracted from a TEM image sequence demonstrates a root mechanism in SWNT growth. A best assignment of (31,14) for the chirality is obtained by means of inverse fast Fourier transform (IFFT) analysis.

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