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Title: NH3 sensing with self-assembled ZnO-nanowire μHP sensors in isothermal and temperature-pulsed mode
Author: Shao, Feng
Fan, Jiandong
Hernández Ramírez, Francisco
Fábrega, Cristian
Andreu Arbella, Teresa
Cabot i Codina, Andreu
Prades García, Juan Daniel
López, Núria (López Alonso)
Udrea, F.
De Luca, Andrea
Ali, Syed Zeeshan
Morante i Lleonart, Joan Ramon
Keywords: Amoníac
Òxid de zinc
Zinc oxide
Issue Date: 1-Apr-2016
Publisher: Elsevier B.V.
Abstract: Dielectrophoretic alignment is found to be a simple and efficient method to deposit the solution prepared ZnO nanowires onto micro hot plate substrates. Due to the strong surface effects, positive temperature coefficient for resistance was encountered with ZnO nanowires in the high temperature range (>250 degrees C). The response to ammonia (NH3) was evaluated in isothermal and temperature-pulsed operation mode; the relative higher response observed in the latter case demonstrates that the use of this methodology is a good strategy to improve the performance of metal oxide sensors based on nanomaterials. Here, we evaluate the response to NH3 and qualitatively describe the sensing mechanism in temperature-pulsed mode, highlighting the main differences compared to the standard isothermal methodology.
Note: Versió postprint del document publicat a:
It is part of: Sensors and Actuators B-Chemical, 2016, vol. 226, p. 110-117
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ISSN: 0925-4005
Appears in Collections:Articles publicats en revistes (Electrònica)
Publicacions de projectes de recerca finançats per la UE

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