Articles | Volume 7, issue 1
https://doi.org/10.5194/jsss-7-411-2018
Special issue:
https://doi.org/10.5194/jsss-7-411-2018
Regular research article
 | 
28 May 2018
Regular research article |  | 28 May 2018

Novel method for the detection of short trace gas pulses with metal oxide semiconductor gas sensors

Tobias Baur, Caroline Schultealbert, Andreas Schütze, and Tilman Sauerwald

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Cited articles

Bârsan, N. and Ionescu, R.: SnO2-based gas sensors as chromatographic detectors, Sensor. Actuat. B-Chem., 19, 470–473, https://doi.org/10.1016/0925-4005(93)01042-3, 1994. 
Bârsan, N. and Weimar, U.: Conduction Model of Metal Oxide Gas Sensors, J. Electroceram., 7, 143–167, https://doi.org/10.1023/A:1014405811371, 2001. 
Baur, T., Schütze, A. and Sauerwald, T.: Optimierung des temperaturzyklischen Betriebs von Halbleitergassensoren, Tech. Mess., 82, 187–195, https://doi.org/10.1515/teme-2014-0007, 2015. 
Baur, T., Schütze, A., and Sauerwald, T.: Detection of short trace gas pulses, in: Proceedings Sensor 2017, Nürnberg, Germany, 30 May–1 June 2017, 87–91, https://doi.org/10.5162/sensor2017/A4.2, 2017. 
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Short summary
A novel method for the detection of short pulses of gas at very low concentrations is presented. Applying the method to a doped SnO2 detector, gas pulses down to a dosage of 1 ppb times seconds can be detected. The gas transport inside the detector is simulated using the finite element method (FEM) to optimize the gas transport and to keep response and recovery time as short as possible. With this approach, we have demonstrated a detection limit for ethanol below 47 fg.
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