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Title: Self-heating effects in large arrangements of randomly oriented carbon nanofibers: Application to gas sensors
Author: Monereo Cuscó, Oriol
Prades García, Juan Daniel
Cirera Hernández, Albert
Keywords: Detectors de gasos
Òxids metàl·lics
Gas detectors
Metallic oxides
Issue Date: 1-May-2015
Publisher: Elsevier B.V.
Abstract: Herein, we prove that self-heating effects occur in sensor films made of randomly oriented nanoparticles (electro-sprayed, drop-casted and paint-brushed films of carbon nanofibers). A 2-point calibration method, reliable enough to overcome the lack of reproducibility of low cost fabrication methods, is also proposed. Self-heating operation makes possible reaching temperatures up to 250 °C with power consumptions in the range of tens of mW. For certain low-temperature applications (<100 °C) typical power consumptions are as low as tens of μW. The method is suitable to modulate the response towards gases, such as humidity, NH3 or NO2. This approach overcomes the complex fabrication requirements of previous self-heating investigations and opens the door to use this effect in cost-effective devices.
Note: Versió postprint del document publicat a:
It is part of: Sensors and Actuators B-Chemical, 2015, vol. 211, p. 489-497
ISSN: 0925-4005
Appears in Collections:Articles publicats en revistes (Electrònica)
Publicacions de projectes de recerca finançats per la UE

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