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Metrology and Measurement Systems

The Journal of Committee on Metrology and Scientific Instrumentation of Polish Academy of Sciences

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Volume 23, Issue 4


Current Fluctuation Measurements of Amperometric Gas Sensors Constructed with Three Different Technology Procedures

Petr Sedlak
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  • Brno University of Technology, Faculty of Electrical Engineering and Communications, Technicka 8, Brno 616 00, Czechia
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/ Petr Kubersky / Pavel Skarvada
  • Brno University of Technology, Faculty of Electrical Engineering and Communications, Technicka 8, Brno 616 00, Czechia
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/ Ales Hamacek / Vlasta Sedlakova
  • Brno University of Technology, Faculty of Electrical Engineering and Communications, Technicka 8, Brno 616 00, Czechia
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/ Jiri Majzner
  • Brno University of Technology, Faculty of Electrical Engineering and Communications, Technicka 8, Brno 616 00, Czechia
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/ Stanislav Nespurek / Josef Sikula
  • Brno University of Technology, Faculty of Electrical Engineering and Communications, Technicka 8, Brno 616 00, Czechia
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Published Online: 2016-12-13 | DOI: https://doi.org/10.1515/mms-2016-0042


Electrochemical amperometric gas sensors represent a well-established and versatile type of devices with unique features: good sensitivity and stability, short response/recovery times, and low power consumption. These sensors operate at room temperature, and therefore have been applied in monitoring air pollutants and detection of toxic and hazardous gases in a number of areas. Some drawbacks of classical electrochemical sensors are overcome by the solid polymer electrolyte (SPE) based on ionic liquids. This work presents evaluation of an SPE-based amperometric sensor from the point of view of current fluctuations. The sensor is based on a novel three-electrode sensor platform with solid polymer electrolytes containing ionic liquid for detection of nitrogen dioxide − a highly toxic gas that is harmful to the environment and presenting a possible threat to human health even at low concentrations. The paper focuses on using noise measurement (electric current fluctuation measurement) for evaluation of electrochemical sensors which were constructed by different fabrication processes: (i) lift-off and drop-casting technology, (ii) screen printing technology on a ceramic substrate and (iii) screen printing on a flexible substrate.

Keywords: current fluctuations; noise measurement; amperometric sensor; solid polymer electrolyte


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About the article

Received: 2015-12-22

Accepted: 2016-05-05

Published Online: 2016-12-13

Published in Print: 2016-12-01

Citation Information: Metrology and Measurement Systems, Volume 23, Issue 4, Pages 531–543, ISSN (Online) 2300-1941, DOI: https://doi.org/10.1515/mms-2016-0042.

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