<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>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.</p>
</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.

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

International Journal on Smart Sensing and Intelligent Systems

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Resistive gas sensors are very popular and reliable but suffer from low selectivity and sensitivity. Various methods have been suggested to improve both...

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

Online veröffentlicht: 15. Feb. 2020

Seitenbereich: 1 - 6

DOI: https://doi.org/10.21307/ijssis-2019-027

Schlüsselwörter
resistive gas sensors, noise, low-frequency fluctuations, gas sensing, detection methods

© 2019 Janusz Smulko et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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

Online veröffentlicht: 15. Feb. 2020

Seitenbereich: 1 - 6

DOI: https://doi.org/10.21307/ijssis-2019-027

Schlüsselwörterresistive gas sensors, noise, low-frequency fluctuations, gas sensing, detection methods

© 2019 Janusz Smulko et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Schlüsselwörter
resistive gas sensors, noise, low-frequency fluctuations, gas sensing, detection methods