Kinetic parameter estimation and fluctuation analysis of CO at SnO 2 single nanowires

Handle URI:
http://hdl.handle.net/10754/598686
Title:
Kinetic parameter estimation and fluctuation analysis of CO at SnO 2 single nanowires
Authors:
Tulzer, Gerhard; Baumgartner, Stefan; Brunet, Elise; Mutinati, Giorgio C; Steinhauer, Stephan; Köck, Anton; Barbano, Paolo E; Heitzinger, Clemens
Abstract:
In this work, we present calculated numerical values for the kinetic parameters governing adsorption/desorption processes of carbon monoxide at tin dioxide single-nanowire gas sensors. The response of such sensors to pulses of 50 ppm carbon monoxide in nitrogen is investigated at different temperatures to extract the desired information. A rate-equation approach is used to model the reaction kinetics, which results in the problem of determining coefficients in a coupled system of nonlinear ordinary differential equations. The numerical values are computed by inverse-modeling techniques and are then used to simulate the sensor response. With our model, the dynamic response of the sensor due to the gas-surface interaction can be studied in order to find the optimal setup for detection, which is an important step towards selectivity of these devices. We additionally investigate the noise in the current through the nanowire and its changes due to the presence of carbon monoxide in the sensor environment. Here, we propose the use of a wavelet transform to decompose the signal and analyze the noise in the experimental data. This method indicates that some fluctuations are specific for the gas species investigated here. © 2013 IOP Publishing Ltd.
Citation:
Tulzer G, Baumgartner S, Brunet E, Mutinati GC, Steinhauer S, et al. (2013) Kinetic parameter estimation and fluctuation analysis of CO at SnO 2 single nanowires . Nanotechnology 24: 315501. Available: http://dx.doi.org/10.1088/0957-4484/24/31/315501.
Publisher:
IOP Publishing
Journal:
Nanotechnology
Issue Date:
12-Jul-2013
DOI:
10.1088/0957-4484/24/31/315501
PubMed ID:
23851634
Type:
Article
ISSN:
0957-4484; 1361-6528
Sponsors:
This work was supported by the WWTF (Vienna Science and Technology Fund) high-potential project no. MA09-028 and by award no. KUK-I1-007-43 funded by the King Abdullah University of Science and Technology (KAUST). The computations were performed on the Vienna Scientific Cluster (VSC). The authors acknowledge Christian Gspan from the Institute for Electron Microscopy and Fine Structure Research, Graz University of Technology, and Center for Electron Microscopy Graz for the TEM analyses.
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Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorTulzer, Gerharden
dc.contributor.authorBaumgartner, Stefanen
dc.contributor.authorBrunet, Eliseen
dc.contributor.authorMutinati, Giorgio Cen
dc.contributor.authorSteinhauer, Stephanen
dc.contributor.authorKöck, Antonen
dc.contributor.authorBarbano, Paolo Een
dc.contributor.authorHeitzinger, Clemensen
dc.date.accessioned2016-02-25T13:34:26Zen
dc.date.available2016-02-25T13:34:26Zen
dc.date.issued2013-07-12en
dc.identifier.citationTulzer G, Baumgartner S, Brunet E, Mutinati GC, Steinhauer S, et al. (2013) Kinetic parameter estimation and fluctuation analysis of CO at SnO 2 single nanowires . Nanotechnology 24: 315501. Available: http://dx.doi.org/10.1088/0957-4484/24/31/315501.en
dc.identifier.issn0957-4484en
dc.identifier.issn1361-6528en
dc.identifier.pmid23851634en
dc.identifier.doi10.1088/0957-4484/24/31/315501en
dc.identifier.urihttp://hdl.handle.net/10754/598686en
dc.description.abstractIn this work, we present calculated numerical values for the kinetic parameters governing adsorption/desorption processes of carbon monoxide at tin dioxide single-nanowire gas sensors. The response of such sensors to pulses of 50 ppm carbon monoxide in nitrogen is investigated at different temperatures to extract the desired information. A rate-equation approach is used to model the reaction kinetics, which results in the problem of determining coefficients in a coupled system of nonlinear ordinary differential equations. The numerical values are computed by inverse-modeling techniques and are then used to simulate the sensor response. With our model, the dynamic response of the sensor due to the gas-surface interaction can be studied in order to find the optimal setup for detection, which is an important step towards selectivity of these devices. We additionally investigate the noise in the current through the nanowire and its changes due to the presence of carbon monoxide in the sensor environment. Here, we propose the use of a wavelet transform to decompose the signal and analyze the noise in the experimental data. This method indicates that some fluctuations are specific for the gas species investigated here. © 2013 IOP Publishing Ltd.en
dc.description.sponsorshipThis work was supported by the WWTF (Vienna Science and Technology Fund) high-potential project no. MA09-028 and by award no. KUK-I1-007-43 funded by the King Abdullah University of Science and Technology (KAUST). The computations were performed on the Vienna Scientific Cluster (VSC). The authors acknowledge Christian Gspan from the Institute for Electron Microscopy and Fine Structure Research, Graz University of Technology, and Center for Electron Microscopy Graz for the TEM analyses.en
dc.publisherIOP Publishingen
dc.titleKinetic parameter estimation and fluctuation analysis of CO at SnO 2 single nanowiresen
dc.typeArticleen
dc.identifier.journalNanotechnologyen
dc.contributor.institutionAustrian Institute of Technology, Vienna, Austriaen
dc.contributor.institutionUniversitat Wien, Vienna, Austriaen
dc.contributor.institutionYale University, New Haven, United Statesen
dc.contributor.institutionUniversity of Cambridge, Cambridge, United Kingdomen

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