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Proceedings 2017, 1(4), 484; doi:10.3390/proceedings1040484

High-Performance Ammonia Sensor at Room Temperature Based on a Love-Wave Device with Fe2O3@WO3−x Nanoneedles

1
CCADET, UNAM, 04510 CD MX, Mexico
2
IMB-CNM, CSIC, Campus UAB, 08193 Bellaterra, Spain
3
ITEFI, CSIC, 28006 Madrid, Spain
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
*
Author to whom correspondence should be addressed.
Published: 25 August 2017
Download PDF [1000 KB, uploaded 26 August 2017]

Abstract

An innovative, simple and inexpensive Love-wave gas sensor based on Fe2O3@WO3−x nanoneedles to detect the variation of ammonia at room temperature was developed. The nanoneedles were successfully formed on Love-wave device via aerosol-assisted chemical vapor deposition (AACVD). The nanoneedles worked as guiding and sensitive layers detecting the changes of the elastic properties presented by ammonia interaction. The sensor was tested to ammonia concentrations between 25 to 90 ppm and showed large frequency shifts, high sensibility, short response time and good reproducibility.
Keywords: Love-wave; Ammonia Sensor; nanoneedles; tungsten oxide; ferric oxide; AACVD Love-wave; Ammonia Sensor; nanoneedles; tungsten oxide; ferric oxide; AACVD
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Bahos, F.A.; Vallejos, S.; Gràcia, I.; Cané, C.; Fernández, M.J.; Horrillo, M.C.; Matatagui, D. High-Performance Ammonia Sensor at Room Temperature Based on a Love-Wave Device with Fe2O3@WO3−x Nanoneedles. Proceedings 2017, 1, 484.

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