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http://hdl.handle.net/2445/98767
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, Florian De Luca, Andrea Ali, Syed Zeeshan Morante i Lleonart, Joan Ramon |
Keywords: | Amoníac Òxid de zinc Silici Semiconductors Ammonia Zinc oxide Silicon Semiconductors |
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: http://dx.doi.org/10.1016/j.snb.2015.11.109 |
It is part of: | Sensors and Actuators B-Chemical, 2016, vol. 226, p. 110-117 |
URI: | http://hdl.handle.net/2445/98767 |
Related resource: | http://dx.doi.org/10.1016/j.snb.2015.11.109 |
ISSN: | 0925-4005 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Publicacions de projectes de recerca finançats per la UE |
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