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Identifying natural and artificial odours through noise analysis with a sampling-and-hold electronic nose
The Ångström Laboratory, Department of Materials Science, Uppsala University, Uppsala, Sweden.
The Ångström Laboratory, Department of Materials Science, Uppsala University, Uppsala, Sweden.
The Ångström Laboratory, Department of Materials Science, Uppsala University, Uppsala, Sweden.
The Ångström Laboratory, Department of Materials Science, Uppsala University, Uppsala, Sweden.
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2001 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, E-ISSN 1873-3077, Vol. 77, no 1-2, 312-315 p.Article in journal (Refereed) Published
Abstract [en]

A sampling-and-hold type electronic nose was used to investigate "frozen" sensor dynamics. The sensor was heated to the sensing temperature and exposed to a chemical environment for a short time. Then, while keeping the sensor in the chemical environment, the heating was switched off so that the sensor cooled down to room temperature. Chemicals species become trapped in the sensor film, and therefore, the current transport in the film is changed. The trapped chemicals are usually located at grain boundaries, and they influence the charge transport in the grains and between the grains. This gives random fluctuations to the local conductivity. Resistance noise was employed to extract chemical information from the sensor in the cold state.

Place, publisher, year, edition, pages
Elsevier, 2001. Vol. 77, no 1-2, 312-315 p.
Keyword [en]
electronic nose, gas sensor, noise spectroscopy, Fungi
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:oru:diva-52307DOI: 10.1016/S0925-4005(01)00698-0ISI: 000169725800050ScopusID: 2-s2.0-0035875721OAI: oai:DiVA.org:oru-52307DiVA: diva2:971826
Conference
8th International Meeting on Chemical Sensors (IMCS-8), Basel, Switzerland, July 2-5, 2000
Available from: 2016-09-19 Created: 2016-09-16 Last updated: 2016-09-19Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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