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Accuracy versus speed in fluctuation-enhanced sensing
Dept of Experimental Physics, University of Szeged, Ungern.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Dept of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA.
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2012 (English)In: Fluctuation and Noise Letters, ISSN 0219-4775, E-ISSN 1793-6780, Vol. 11, no 2, 1250010- p.Article in journal (Refereed) Published
Abstract [en]

Fluctuation-enhanced sensing (FES) comprises the analysis of the stochastic component of the sensor signal and the utilization of the microscopic dynamics of the interaction between the agent and the sensor. We study the relationship between the measurement time window and the statistical error of the measurement data in the simplest case, when the output is the mean-square value of the stochastic signal. This situation is relevant at any practical case when the time window is finite, for example, when a sampling of the output of a fluctuation-enhanced array takes place; or a single sensor's activation (temperature, etc.) is stepped up; or a single sensor's output is monitored by sampling subsequently in different frequency windows. Our study provides a lower limit of the relative error versus data window size with different types of power density spectra: white noise, 1/f (flicker, pink) noise, and 1/f(2) (red) noise spectra.

Place, publisher, year, edition, pages
2012. Vol. 11, no 2, 1250010- p.
Keyword [en]
Fluctuation-enhanced sensing, coloured noise, detection speed, accuracy
National Category
Engineering and Technology
Research subject
Engineering Science with specialization in Solid State Physics
Identifiers
URN: urn:nbn:se:uu:diva-180290DOI: 10.1142/S0219477512500101ISI: 000307119100010OAI: oai:DiVA.org:uu-180290DiVA: diva2:549105
Available from: 2012-09-03 Created: 2012-09-03 Last updated: 2017-12-07Bibliographically approved

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Topalian, ZarehGranqvist, Claes-Göran

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