Field emission patterns from single-walled carbon nanotubes

Yahachi Saito, Koji Hamaguchi, Tetsuo Nishino, Koichi Hata, Kazuyuki Tohji, Atsuo Kasuya, Yuichiro Nishina

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141 Citations (Scopus)


A bulk bundle (with a diameter of about 100 μm) of single-walled nanotubes (SWNTs), which were obtained after a purification process of carbon soot containing SWNTs, was used as an electron emitter. Many spikes of micro-bundles (with a typical diameter of 20-30 nm) of SWNTs extruded from the surface of the bulk emitter. Field emission originating from individual micro-bundles was observed on a fluorescent screen 50 mm apart from the tip. Each micro-bundle of SWNTs gave a corresponding bright spot, but no fine structure was observed within the bright spots. A probe hole device was used to measure an electron current from a single micro-bundle. The Fowler-Nordheim plot of the current and the applied voltage yielded a straight line, confirming the current results from field emission.

Original languageEnglish
Pages (from-to)L1340-L1342
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number10 PART A
Publication statusPublished - 1997 Oct 1


  • Carbon nanotube
  • Field emission
  • Field emission microscopy
  • Single-walled nanotubes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)


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