| 碳纳米管的变温场发射 |
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| 引用本文： | 郭大勃,元光,宋翠华,顾长志,王强.碳纳米管的变温场发射[J].物理学报,2007,56(10):6114-6117. |
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| 作者姓名： | 郭大勃 元光 宋翠华 顾长志 王强 |
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| 作者单位： | 1. 中国海洋大学物理系,青岛,266100
2. 中国科学院物理研究所微加工实验室,北京,100080 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 考察了温度变化对沉积在钨丝针尖上的碳纳米管场发射的影响，发现碳纳米管场发射电流随温度升高而增大，场发射电流的稳定性基本没有变化. 多根碳纳米管的场发射特性随温度变化出现偏离Fowler-Nordheim理论的现象，这种现象可能来自碳纳米管的不均匀性.
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| 关 键 词： | 场发射 碳纳米管 温度特性 |
| 收稿时间： | 2007-01-31 |
| 修稿时间： | 2007-01-31 |
Field emission of carbon nanotubes |
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| Guo Da-Bo,Yuan Guang,Song Cui-Hua,Gu Chang-Zhi,Wang Qiang.Field emission of carbon nanotubes[J].Acta Physica Sinica,2007,56(10):6114-6117. |
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| Authors: | Guo Da-Bo Yuan Guang Song Cui-Hua Gu Chang-Zhi Wang Qiang |
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| Institution: | 1. Departmeat of Physics , Ocean UniversityofChina, Qingdao 266100, China;2. Laboratory of Microfabrication, Institute of Physics, Chinese Academy of Scienees, Bering 100080, China |
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| Abstract: | The temperature dependence of field emission from multiwalled carbon nanotubes deposited on a W tip was studied. It is found that the emission current increases with increase of temperature, while the stability of the emission current did not change. The field emission characteristic deviates from classic Fowler-Nordheim theory. This may result from a dispersion in the field enhancement factor of the carbon nanotubes. |
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| Keywords: | field emission carbon nanotube temperature characteristic |
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