In situ Transmission Electron Microscopy of Field-Emitting Bundles of Double-Wall Carbon Nanotubes
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概要
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The dynamic behavior and degradation of carbon nanotube field emitters were studied by in situ transmission electron microscopy. The carbon nanotube emitters used for the study were double-wall nanotubes (DWNTs) produced by arc discharge. The DWNTs formed bundles, each of which contained about seven DWNTs. The splitting of a bundle into two branches, forming a “Y” shape, accompanied by an abrupt increase of emission current, was observed in real time. The shortening of bundles, presumably due to Joule heating, was also observed. The maximum emission current from a bundle just before its sublimation was at least 10 μA, which corresponds to 1.4 μA per single DWNT.
- 2005-05-10
著者
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Saito Yahachi
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Seko Kazuyuki
Department of Quantum Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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Seko Kazuyuki
Department of Quantum Engineering, Nagoya University, Nagoya 464-8603, Japan
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Kinoshita Jun-ichi
Department of Quantum Engineering, Nagoya University, Nagoya 464-8603, Japan
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