Separating Chemical Signals of Adsorption- Desorption and Diffusive Processes

Separating Chemical Signals of Adsorption- Desorption and Diffusive Processes

We present a new sensor signal processing method that improves selectivity, sensitivity, and processing speed in systems, using fluctuation-enhanced sensing. We consider the output signal of a symmetric two-sensor arrangement and generate two independent output spectra by separating the adsorption-d...

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Veröffentlicht in:IEEE sensors journal 2010-03, Vol.10 (3), p.461-464
Hauptverfasser: Schmera, G., Gingl, Z., Kish, L.B., Ayhan, B., Kwan, C., Granqvist, C.-G.
Format: Artikel
Sprache:eng
Schlagworte:
Acoustic sensors
Acoustical engineering
Adsorption-desorption
Chemical analysis
Chemical processes
Chemical sensors
diffusion
fluctuation-enhanced sensing (FES)
Fluctuations
Signal processing
signal separation
Solid state circuits
Stochastic resonance
Surface acoustic wave devices
TECHNOLOGY
TEKNIKVETENSKAP
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Beschreibung
Zusammenfassung:We present a new sensor signal processing method that improves selectivity, sensitivity, and processing speed in systems, using fluctuation-enhanced sensing. We consider the output signal of a symmetric two-sensor arrangement and generate two independent output spectra by separating the adsorption-desorption signal component from the diffusion signal component. We demonstrate the key features of our method by computer modeling and simulation.
ISSN:1530-437X
1558-1748
1558-1748
DOI:10.1109/JSEN.2009.2038538