Discovery of Carbon Nanowires Formed on a Carbon-Doped Ni(III) Substrate by a Bulk-to-Surface Precipitation Process

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  • Fujita Daisuke
    Nanomaterials Laboratory, National Institute for Materials Science
  • Ohgi Taizo
    Nanomaterials Laboratory, National Institute for Materials Science
  • Onishi Keiko
    Nanomaterials Laboratory, National Institute for Materials Science
  • Kumakura Tsuyako
    Nanomaterials Laboratory, National Institute for Materials Science
  • Harada Masaaki
    Faculty of Education, Fukuoka University of Education

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  • Discovery of Carbon Nanowires Formed on a Carbon-Doped Ni(111) Substrate by a Bulk-to-Surface Precipitation Process.

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We have discovered a synthesis method for carbon nanowires on a flat single-crystal graphite (0001) surface on a carbon-doped Ni(111) substrate using only heat treatment in ultrahigh vacuum. It should be noted that this new carbon nanowire synthesis method requires no external carbon-containing source. The growth mechanism utilizes a bulk-to-surface precipitation process of internal carbon atoms that were doped in a pure Ni(111) substrate in advance. Nanometer-scale morphology and chemistry of the carbon nanowires have been clarified by low-energy electron diffraction combined with Auger electron spectroscopy (LEED/AES), scanning tunneling microscopy (STM) and field-emission scanning Auger microcopy (FE-SAM).

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