Abstract
We investigated field emission (FE) properties of imogolite including the turn-on field and lifetime stability. Imogolite is an excellent electron emitter with a turn-on field of approximately 2.5-3.5 V/μm. A lifetime test revealed that imogolite protects itself during FE under exposure to O 2 gas. We also measured the current-voltage characteristics of the imogolite as a function of the amount of water adsorbed on the surface. The results suggested that the electrode-containing imogolite device could be a useful water sensor in a nanoscale environment.
Original language | English |
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Pages (from-to) | 893-897 |
Number of pages | 5 |
Journal | Journal of Materials Science: Materials in Electronics |
Volume | 18 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2007 |
Bibliographical note
Funding Information:Acknowledgments This work was supported by the ‘‘Korean Science and Engineering Foundation’’ sponsoring ‘‘Advanced Basic Research Lab. R14-2003-014-01001-0’’, and ‘‘Basic Research Program, R01-2006-000-10396-0’’, and ‘‘Ministry of Education and Human Resources Development’’ sponsoring ‘‘The Second Stage of BK21’’.