<i>In situ</i> observation of carbon-nanopillar tubulization process

  • Toshinari Ichihashi
    Fundamental and Environmental Research Laboratories, NEC Corporation , 34 Miyukigaoka, Tsukuba 305-8501, Japan and , Kawaguchi Center Building, 4-1-8 Hon-cho, Kawaguchi 332-0012, Japan
  • Masahiko Ishida
    Fundamental and Environmental Research Laboratories, NEC Corporation , 34 Miyukigaoka, Tsukuba 305-8501, Japan and , Kawaguchi Center Building, 4-1-8 Hon-cho, Kawaguchi 332-0012, Japan
  • Yukinori Ochiai
    Fundamental and Environmental Research Laboratories, NEC Corporation , 34 Miyukigaoka, Tsukuba 305-8501, Japan and , Kawaguchi Center Building, 4-1-8 Hon-cho, Kawaguchi 332-0012, Japan
  • Jun-ichi Fujita
    Institute of Applied Physics, University of Tsukuba , 1-1-1 Tennoudai, Tsukuba 305-8573, Japan and , Kawaguchi Center Building, 4-1-8 Hon-cho, Kawaguchi 332-0012, Japan

抄録

<jats:p>We observed the tubulization process of amorphous carbon nanopillars using an in situ transmission electron microscopy. Amorphous carbon nanopillars were grown by electron-beam-induced chemical vapor deposition on an iron-doped carbon foundation. Amorphous carbon nanopillars were transformed into graphitic tubules by annealing at about 650°C in the presence of iron nanoparticles supplied from the iron-doped carbon foundation. A molten catalyst nanoparticle penetrated an amorphous carbon nanopillar, dissolving it and leaving a graphite track behind. This graphitic nanotube synthesis technique using nanofabrication promises to bring about a great advance in nanotube electronic devices.</jats:p>

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