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Nodular Carbon Nanotubes and Their Field Emission Characteristics |
| LI Qiong1;XU Jing-Fang1,2;FENG Tao2;WANG Xi2;LIU Xiang-Huai2 |
| 1Department of Electronics Science and Technology, East China Normal University, Shanghai 200062
2Ion Beam Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050
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| Cite this article: |
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LI Qiong, XU Jing-Fang, FENG Tao et al 2002 Chin. Phys. Lett. 19 1021-1023 |
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Abstract A new configuration of carbon nanotubes (CNTs) has been discovered in our laboratory and their surfaces are fully covered with nano-sized node-like structures. The node structures have almost the same size of 40-50 nm. We refer to this material as the nodular carbon nanotubes (NCNTs). Field emission scanning electron microscopy shows that after a hydrogen plasma process in our homemade plasma equipment, the common carbon nanotubes were changed into NCNTs. The experimental result demontrates that this material has good field emission characteristics, low threshold field, stable and suitable emitting current, especially for the emission site density up to the order of 106cm-2.
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| Keywords:
81.40.Rs
79.60.Jv
85.45.Db
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Published: 01 July 2002
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| PACS: |
81.40.Rs
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(Electrical and magnetic properties related to treatment conditions)
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79.60.Jv
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(Interfaces; heterostructures; nanostructures)
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85.45.Db
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(Field emitters and arrays, cold electron emitters)
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