Carbon Nanotube Sensors for Gas and Organic Vapor Detection

@inproceedings{LiCarbonNS,
  title={Carbon Nanotube Sensors for Gas and Organic Vapor Detection},
  author={Jing Li and Yijiang Lu and Qi Ye and Martin Cinke and Jie Han and M. Meyyappan}
}
A gas sensor, fabricated by the simple casting of single-walled carbon nanotubes (SWNTs) on an interdigitated electrode (IDE), is presented for gas and organic vapor detection at room temperature. The sensor responses are linear for concentrations of sub ppm to hundreds of ppm with detection limits of 44 ppb for NO2 and 262 ppb for nitrotoluene. The time is on the order of seconds for the detection response and minutes for the recovery. The variation of the sensitivity is less than 6% for all… CONTINUE READING
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