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 journalArticle

48 Citations (Scopus)

Abstract

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
JournalNanotechnology
Volume18
Issue number43
DOIs
Publication statusPublished - 2007 Oct 31

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Carbon Nanotubes
Chemical sensors
Carbon nanotubes
Gases
Electric potential
Carbon nanotube field effect transistors
Sensors
Field effect transistors

All Science Journal Classification (ASJC) codes

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

Cite this

Chang, Young Wook ; Oh, Je Seung ; Yoo, Seung Hwan ; Choi, Hyang Hee ; Yoo, Kyung-hwa. / Electrically refreshable carbon-nanotube-based gas sensors. In: Nanotechnology. 2007 ; Vol. 18, No. 43.
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Electrically refreshable carbon-nanotube-based gas sensors. / Chang, Young Wook; Oh, Je Seung; Yoo, Seung Hwan; Choi, Hyang Hee; Yoo, Kyung-hwa.

In: Nanotechnology, Vol. 18, No. 43, 435504, 31.10.2007.

Research output: Contribution to journalArticle

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AU - Yoo, Kyung-hwa

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