Electrically refreshable carbon-nanotube-based gas sensors

Young Wook Chang, Je Seung Oh, Seung Hwan Yoo, Hyang Hee Choi, Kyung Hwa Yoo

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)


We report electrically refreshable carbon-nanotube (CNT)-based gas sensors with a field effect transistor (FET) structure. The sensors can be refreshed by applying a negative gate voltage pulse in NO2 and a positive gate voltage pulse in NH3. Furthermore, the temporal response of the conductance to the gate voltage pulse is observed to be dependent on the gas species, but independent of gas concentration. These results show the possibility of distinguishing gas species using CNT-FET sensors.

Original languageEnglish
Article number435504
Issue number43
Publication statusPublished - 2007 Oct 31

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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