Bias-heating recovery of MWCNT gas sensor

Seung IL Moon, Kyeong Kap Paek, Yun Hi Lee, Hun Kuk Park, Jai Kyeong Kim, Soo Won Kim, Byeong Kwon Ju

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


A sensor was made using Au/Cr electrodes on a glass substrate and a thin carbon multiwall nanotube film printed between them. A bias-heating method was used completely to desorb gas molecules and restore its initial conductance. The temperature of the thin carbon nanotube film varied depending on the magnitude of the voltage used, and this relationship was investigated. After being used to detect NO2, the sensor returned to its initial conductance. This method enables complete recovery without additional processing steps, such as the fabrication of heat structure and ambient heating.

Original languageEnglish
Pages (from-to)2422-2425
Number of pages4
JournalMaterials Letters
Issue number16
Publication statusPublished - 2008 Jun 15

Bibliographical note

Funding Information:
This work was supported by the National Research Laboratory Program (R0A-2007-000-20111-0) of the Ministry and Science of Technology in Korea and partially supported by the Seoul R&BD Program (CR070054).


  • Bias-heating recovery
  • Gas sensor
  • Multiwall carbon nanotubes

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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