Journal ArticleDOI
Higher-order spectra in nanoparticle gas sensors
TLDR
In this paper, the authors report measurements and analysis of non-Gaussian components in nanoparticle Pdz(WO3)1-z film gas sensors, with z being 0.01 or 0.12, in different ambients.Abstract:
It has previously been shown that resistance fluctuations in resistive sensors provide enhanced sensitivity and selectivity for gas detection. We report measurements and analysis of non-Gaussian components in nanoparticle Pdz(WO3)1-z film gas sensors, with z being 0.01 or 0.12, in different ambients. These components can be characterized by higher-order spectra. Contour plots are given of bispectra, and plots of integrated bispectra and trispectra. The phase of the integrated higher-order spectra is analyzed as well.read more
Citations
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Journal ArticleDOI
New approaches for improving selectivity and sensitivity of resistive gas sensors: a review
Janusz Smulko,Maciej Trawka,Claes-Göran Granqvist,Radu Ionescu,Fatima Ezahra Annanouch,Eduard Llobet,Laszlo B. Kish +6 more
TL;DR: In this article, the authors analyzed low-frequency resistance fluctuations in commercial Taguchi gas sensors and the recently developed tungsten trioxide (WO3) gas-sensing layers, exhibiting a photo catalytic effect.
Proceedings Article
New Approaches for Improving Selectivity and Sensitivity of Resistive Gas Sensors: A Review
Janusz Smulko,Maciej Trawka,Radu Ionescu,Fatima Ezahra Annanouch,Eduard Llobet,Claes-Göran Granqvist,Laszlo B. Kish +6 more
TL;DR: New Approaches for Improving Selectivity and Sensitivity of Resistive Gas Sensors: A Review as discussed by the authors is a review of new approaches for improving selectivity and sensitivity of resistive gas sensors.
Journal ArticleDOI
On the Sensitivity, Selectivity, Sensory Information and Optimal Size of Resistive Chemical Sensors
TL;DR: In this article, the sensitivity and selectivity enhancements of resistive fluctuation-enhanced sensors are studied at the generic level with a few concrete examples and include the estimation of scaling relations between the sensor size, speed of measurements, sampling rate, measurement time, signal power and noise power.
Posted Content
Fluctuation-Enhanced Sensing of Bacterium Odors
TL;DR: In this paper, the authors explore the possibility to detect and identify bacteria by sensing their odors via fluctuation-enhanced sensing with commercial Taguchi sensors, and the results indicate that taguchi sensors used in these fluctuationenhanced modes are effective tools of bacterium detection and identification.
Journal ArticleDOI
Fluctuation-enhanced sensing of bacterium odors
TL;DR: In this article, the authors explore the possibility to detect and identify bacteria by sensing their odors via fluctuation-enhanced sensing with commercial Taguchi sensors, and show that taguchi sensors used in these fluctuationenhanced modes are effective tools of bacterium detection and identification even when they are utilizing only the power density spectrum of the stochastic sensor signal.
References
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Extracting information from noise spectra of chemical sensors: single sensor electronic noses and tongues
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Journal ArticleDOI
Detection of non-Gaussian signals using integrated polyspectrum
TL;DR: The use of an integratedpolyspectrum (bispectrum of trispectrum) is suggested to improve computational efficiency of the detectors based on polyspectrum and to possibly further enhance their detection performance.