Field emission from carbon nanotubes; purified single-walled and multi- walled tubes

Yahachi Saito, Koji Hamaguchi, Koichi Hata, Kazuyuki Tohji, Atsuo Kasuya, Yuichiro Nishina, Kunio Uchida, Yoshiharu Tasaka, Fumikazu Ikazaki, Motoo Yumura

研究成果: Conference article査読

103 被引用数 (Scopus)

抄録

Field emission microscopy of single-walled nanotubes (SWNTs) and multi- walled nanotubes (MWNTs) was performed. A bulk bundle (diameter 0.01 - 0.1 mm and length 1 - 2 mm) of SWNTs and MWNTs, which were obtained after purification processes of carbon soot containing respective nanotubes, was used as an electron emitter. For SWNTs, field emission (FE) originating from individual micro-bundles (with diameter 10 - 20 nm) was observed. Each micro- bundle gave only a bright spot without fine structure. For MWNTs, hollow ring patterns were observed since the caps of purified MWNTs used in the present study were open. Current vs. voltage characteristics were also measured by using a probe hole device, and the Fowler-Nordheim plot yielded a straight line in low current regions for both SWNTs and MWNTs.

本文言語English
ページ(範囲)1-6
ページ数6
ジャーナルUltramicroscopy
73
1-4
DOI
出版ステータスPublished - 1998 6 1
イベントProceedings of the 1997 44th International Field Emission Symposium - Tsukuba, Jpn
継続期間: 1997 7 71997 7 11

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 器械工学

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