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Abstract
We discuss the implementation challenges of gas sensing systems based on low-frequency noise measurements on chemoresistive sensors. Resistance fluctuations in various gas sensing materials, in a frequency range typically up to a few kHz, can enhance gas sensing by considering its intensity and the slope of power spectral density. The issues of low-frequency noise measurements in resistive gas sensors, specifically in two-dimensional materials exhibiting gas-sensing properties, are considered. We present measurement setups and noise-processing methods for gas detection. The chemoresistive sensors show various DC resistances requiring different flicker noise measurement approaches. Separate noise measurement setups are used for resistances up to a few hundred kΩ and for resistances with much higher values. Noise measurements in highly resistive materials (e.g., MoS2, WS2, and ZrS3) are prone to external interferences but can be modulated using temperature or light irradiation for enhanced sensing. Therefore, such materials are of considerable interest for gas sensing.
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Authors (6)
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Graziella Scandurra
- University of Messina
-
Carmine Ciofi
- University of Messina
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He Wen
- Hunan University
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/s24020405
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
SENSORS
no. 24,
ISSN: 1424-8220 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Smulko J., Scandurra G., Drozdowska K., Kwiatkowski A., Ciofi C., Wen H.: Flicker Noise in Resistive Gas Sensors—Measurement Setups and Applications for Enhanced Gas Sensing// SENSORS -Vol. 24,iss. 2 (2024), s.405-
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/s24020405
- Sources of funding:
-
- Statutory activity/subsidy
- Verified by:
- Gdańsk University of Technology
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