Imogolite as an electron emitter and a water sensor

Jihoon Oh, Sunyoung Chang, Jiyoung Jang, Seungkwang Roh, Jaehong Park, Jungwoo Lee, Daewon Sohn, Whikun Yi, Yeongri Jung, Sung Jin Kim

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


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 languageEnglish
Pages (from-to)893-897
Number of pages5
JournalJournal of Materials Science: Materials in Electronics
Issue number8
StatePublished - Aug 2007


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