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New approaches for improving selectivity and sensitivity of resistive gas sensors: A review

Abstract

Resistive gas sensors are very popular and reliable but suffer from low selectivity and sensitivity. Various methods have been suggested to improve both features without increasing the number of sensors in gas detection systems. Fluctuation enhanced gas sensing was proposed to improve gas detection efficiency by analyzing low-frequency resistance fluctuations, and noise parameters can be more informative than the single DC resistance and can advance gas detection systems by improving detection and limiting energy consumption. Gas sensor temperature can be modulated as well to further increase selectivity and sensitivity. Finally, some gas sensing layers exhibit a photo-catalytic effect, which can be applied to improve detection and yield lower operating temperatures of the gas sensing materials.

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Details

Category:
Conference activity
Type:
publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
Title of issue:
Proceedings of 2014 Eighth International Conference on Sensing Technology strony 13 - 18
Language:
English
Publication year:
2014
Bibliographic description:
Smulko J., Trawka M., Hasse L., Granqvist C., Ionescu R., Annanouch F., Llobet E., Kish L.: New approaches for improving selectivity and sensitivity of resistive gas sensors: A review// Proceedings of 2014 Eighth International Conference on Sensing Technology/ Liverpool, UK: The Built Environment and Sustainable Technologies (BEST) Research Institute, 2014, s.13-18
DOI:
Digital Object Identifier (open in new tab) 10.1108/sr-12-2014-0747
Verified by:
Gdańsk University of Technology

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