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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/98767
NH3 sensing with self-assembled ZnO-nanowire μHP sensors in isothermal and temperature-pulsed mode
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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.
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SHAO, Feng, et al. NH3 sensing with self-assembled ZnO-nanowire μHP sensors in isothermal and temperature-pulsed mode. Sensors and Actuators B-Chemical. 2016. Vol. 226, num. 110-117. ISSN 0925-4005. [consulted: 9 of June of 2026]. Available at: https://hdl.handle.net/2445/98767