Field Emission Studies on Methane- and Ethane-Adsorbed Carbon Nanotubes
| Autor: | Tetsuya Yamashita, Yahachi Saito, Hitoshi Nakahara |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Astrophysics::High Energy Astrophysical Phenomena Analytical chemistry Bioengineering Surfaces and Interfaces Carbon nanotube Condensed Matter Physics Methane Surfaces Coatings and Films law.invention Field emission microscopy Condensed Matter::Materials Science Field electron emission chemistry.chemical_compound Adsorption chemistry Mechanics of Materials law Current (fluid) Astrophysics::Galaxy Astrophysics Biotechnology Electron gun Common emitter |
| Zdroj: | e-Journal of Surface Science and Nanotechnology. 8:77-80 |
| ISSN: | 1348-0391 |
| DOI: | 10.1380/ejssnt.2010.77 |
| Popis: | Carbon nanotubes (CNTs) are known as one of the ideal electron emitter material. However, there are many challenges to solve for actual use such as emission current enhancement, emission current stability, life time extension, etc. In this work, methane and ethane gases are used to improve emission characteristics from CNT emitters. A CNT emitter used in this study is a bundle of multi-walled CNTs. In situ field emission microscopy is used to investigate gas effects on emission characteristics. From comparative experiments under different exposure conditions, it is found that gas exposure during field emission is effective to increase emission currents and the effects are comparable between two gases. It is also found that the effect caused by ethane gas has longer life time than that by methane gas. [DOI: 10.1380/ejssnt.2010.77] |
| Databáze: | OpenAIRE |
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