An electrothermal carbon nanotube gas sensor.

  title={An electrothermal carbon nanotube gas sensor.},
  author={Takeshi Kawano and H. C. Chiamori and Marcel Suter and Qin Zhou and Brian D. Sosnowchik and Liwei Lin},
  journal={Nano letters},
  volume={7 12},
We show both gas pressure and species sensing capabilities based on the electrothermal effect of a multiwalled carbon nanotube (MWCNT). Upon exposure to gaseous environments, the resistance of a heated MWCNT is found to change following the conductive heat-transfer variances of gas molecules. To realize this mechanism, a suspended MWCNT is constructed by synthesis and assembly in localized chemical vapor deposition that is accomplished within seconds via real-time electrical feedback control… CONTINUE READING
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