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Abstract
Purpose – This paper aims to present the methods of improving selectivity and sensitivity of resistance gas sensors. Design/methodology/approach – This paper compares various methods of improving gas sensing by temperature modulation, UV irradiation or fluctuation-enhanced sensing. The authors analyze low-frequency resistance fluctuations in commercial Taguchi gas sensors and the recently developed tungsten trioxide (WO3) gas-sensing layers, exhibiting a photo-catalytic effect. Findings – The efficiency of using low-frequency fluctuations to improve gas detection selectivity and sensitivity was confirmed by numerous experimental studies in commercial and prototype gas sensors. Research limitations/implications – A more advanced measurement setup is required to record noise data but it will reduce the number of gas sensors necessary for identifying the investigated gas mixtures. Practical implications – Fluctuation-enhanced sensing can reduce the energy consumption of gas detection systems and assures better detection results. Originality/value – A thorough comparison of various gas sensing methods in resistance gas sensors is presented and supported by exemplary practical applications.
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Authors (7)
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Claes Goran Granqvist
- Uppsala University Department of Engineering Sciences
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Radu Ionescu
- Department of Electronics Rovira i Virgily University
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Fatima E. Annanouch
- Department of Electronics Rovira i Virgily University
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Eduard Llobet
- Department of Electronics Rovira i Virgily University
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Laszlo B. Kish
- Texas A&M University Department of Electrical Engineering
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1108/sr-12-2014-0747
- License
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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Sensor Review
no. 35,
edition 4,
pages 340 - 347,
ISSN: 0260-2288 - Language:
- English
- Publication year:
- 2015
- Bibliographic description:
- Smulko J., Trawka M., Granqvist C., Ionescu R., Annanouch F., Llobet E., Kish L.: New approaches for improving selectivity and sensitivity of resistive gas sensors: a review// Sensor Review. -Vol. 35, iss. 4 (2015), s.340-347
- DOI:
- Digital Object Identifier (open in new tab) 10.1108/sr-12-2014-0747
- Verified by:
- Gdańsk University of Technology
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