Comparison of Field Emissions from Side Wall and Tip of an Individual Carbon Nanotube
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- Konishi Yasumoto
- Department of Physics and Electronics, Osaka Prefecture University
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- Hokushin Shogo
- Department of Physics and Electronics, Osaka Prefecture University
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- Tanaka Hiroyoshi
- Department of Physics and Electronics, Osaka Prefecture University
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- Pan Lujun
- Department of Physics and Electronics, Osaka Prefecture University
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- Akita Seiji
- Department of Physics and Electronics, Osaka Prefecture University
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- Nakayama Yoshikazu
- Department of Physics and Electronics, Osaka Prefecture University Handai Frontier Research Center, Graduate School of Engineering, Osaka University
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抄録
Electrons are generally emitted from the tip of a carbon nanotube (CNT) when the CNT stands on a substrate, but it is not clear where electrons are emitted when a CNT is bent or lies down on a substrate. We have investigated the field emission properties of the side wall of a multi-walled carbon nanotube (MWNT) compared with that of the tip of a MWNT. We also calculated electric field intensities at the side wall and the tip of a MWNT using the finite element method. The turn-on voltage is 150 V for the tip and 570 V for the side wall of the MWNT, which is consistent with calculations indicating that the intensity of the electric field concentrated on the tip of a CNT is 2.8 times larger than that on the side wall of a CNT shaped like a loop. This suggests that the field emission is predominantly from the tips of CNTs in a field emitter. However, the emission current from the side wall is larger than that from the tip of MWNTs.
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 44 (4A), 1648-1651, 2005
The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1390001206264297728
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- NII論文ID
- 10015469881
- 210000057556
- 130004533621
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- NII書誌ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL書誌ID
- 7302333
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可