Field emission patterns from single-walled carbon nanotubes

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

Field emission patterns from single-walled carbon nanotubes

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

Environmental Studies (department affiliation only)

Research output: Contribution to journal › Article

138 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	L1340-L1342
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	36
Issue number	10 PART A
Publication status	Published - 1997 Oct 1

Keywords

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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Saito, Y., Hamaguchi, K., Nishino, T., Hata, K., Tohji, K., Kasuya, A., & Nishina, Y. (1997). Field emission patterns from single-walled carbon nanotubes. Japanese Journal of Applied Physics, Part 2: Letters, 36(10 PART A), L1340-L1342.

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AU - Nishino, Tetsuo

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AU - Tohji, Kazuyuki

AU - Kasuya, Atsuo

AU - Nishina, Yuichiro

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AB - 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.

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