The Effect of the Orientation Towards Analyte Flow on Electrochemical Sensor Performance and Current Fluctuations

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dc.contributor.authorSedlák, Petrcs
dc.contributor.authorKuberský, Petrcs
dc.coverage.issue4cs
dc.coverage.volume20cs
dc.date.issued2020-02-14cs
dc.description.abstractAnalyte flow influences the performance of every gas sensor; thus, most of these sensors usually contain a diffusion barrier (layer, cover, inlet) that can prevent the negative impact of a sudden change of direction and/or the rate of analyte flow, as well as various unwanted impacts from the surrounding environment. However, several measurement techniques use the modulation of the flow rate to enhance sensor properties or to extract more information about the chemical processes that occur on a sensitive layer or a working electrode. The paper deals with the experimental study on how the analyte flow rate and the orientation of the electrochemical sensor towards the analyte flow direction influence sensor performance and current fluctuations. Experiments were carried out on a semi-planar, three-electrode topology that enabled a direct exposure of the working (sensing) electrode to the analyte without any artificial diffusion barrier. The sensor was tested within the flow rate range of 0.1–1 L/min and the orientation of the sensor towards the analyte flow direction was gradually set to the four angles 0°, 45°, 90° and 270° in the middle of the test chamber, while the sensor was also investigated in the standard position at the bottom of the chamber.en
dc.formattextcs
dc.format.extent1-17cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationSENSORS. 2020, vol. 20, issue 4, p. 1-17.en
dc.identifier.doi10.3390/s20041038cs
dc.identifier.issn1424-8220cs
dc.identifier.orcid0000-0003-2454-7951cs
dc.identifier.other162256cs
dc.identifier.researcheridE-2354-2012cs
dc.identifier.scopus57201044717cs
dc.identifier.urihttp://hdl.handle.net/11012/184645
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofSENSORScs
dc.relation.urihttps://www.mdpi.com/1424-8220/20/4/1038cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1424-8220/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectanalyte flowen
dc.subjectcurrent fluctuationsen
dc.subjectamperometric sensoren
dc.subjectsignal-to-noise ratioen
dc.titleThe Effect of the Orientation Towards Analyte Flow on Electrochemical Sensor Performance and Current Fluctuationsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-162256en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:40:23en
sync.item.modts2025.01.17 20:32:45en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav fyzikycs
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