Title :
NO2 detection with Single Walled Carbon Nanotube Networks
Author :
Sayago, I. ; Terrado, E. ; Horrillo, M.C. ; Aleixandre, M. ; Fernandez, M.J. ; Santos, H. ; Maser, W.K. ; Benito, A.M. ; Martinez, M.T. ; Gutierrez, Jessica ; Munoz, E.
Author_Institution :
Lab. de Sensores IFA-CSIC, Madrid
fDate :
Jan. 31 2007-Feb. 2 2007
Abstract :
Single-walled carbon nanotube (SWNT) networks were tested as gas sensors for nitrogen dioxide detection. Sensor films were fabricated by airbrushing SWNT dispersions on alumina substrates. Sensors were characterized by resistance measurements from 25 to 200degC. The best response to NO2 was obtained at 200degC. The tested SWNT sensors were sensitive to low NO2 concentrations in nitrogen and air atmospheres. Moreover, these sensors provided no response to interfering gases such as H2, NH3, toluene and octane. The effect of thermal treatments on the sensor response was also investigated.
Keywords :
carbon nanotubes; gas sensors; NO2; alumina substrate; gas sensor; nitrogen dioxide detection; resistance measurement; sensor film; single walled carbon nanotube network sensor; temperature 200 C; temperature 25 C to 200 C; thermal treatment; Atomic force microscopy; Carbon nanotubes; Electrical resistance measurement; Gas detectors; Gases; Hydrogen; Nitrogen; Sensor phenomena and characterization; Temperature sensors; Testing; NO2; carbon nanotubes; gas sensor;
Conference_Titel :
Electron Devices, 2007 Spanish Conference on
Conference_Location :
Madrid
Print_ISBN :
1-4244-0868-7
DOI :
10.1109/SCED.2007.384024
