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Detection of Soot Using a Resistivity Sensor Device Employing Thermophoretic Particle Deposition
University of Iasi, Romania.
Lund University.
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics . Linköping University, The Institute of Technology.
Volvo Technology, Göteborg.
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2010 (English)In: Journal of Sensors, Vol. 2010, no 421072Article in journal (Refereed) Published
Abstract [en]

Results are reported for thermophoretic deposition of soot particles on resistivity sensors as a monitoring technique for diesel exhaust particles with the potential of improved detection limit and sensitivity. Soot with similar characteristics as from diesel exhausts was generated by a propane flame and diluted in stages. The soot in a gas flow at 240–270C∘ was collected on an interdigitated electrode structure held at a considerably lower temperature, 105–125C∘. The time delay for reaching measurable resistance values, the subsequent rate, and magnitude of resistance decrease were a function of the distance between the fingers in the electrodes and the degree of dilution of the soot containing flow. Soot deposition and subsequent removal by heating the sensor support was also performed in a real diesel exhaust. Good similarities between the behavior in our laboratory system and the real diesel exhaust were noticed.

Place, publisher, year, edition, pages
Hindawi , 2010. Vol. 2010, no 421072
National Category
Other Engineering and Technologies
URN: urn:nbn:se:liu:diva-62813DOI: 10.1155/2010/421072OAI: diva2:374642
Original Publication: Doina Lutic, Joakim Pagels, Robert Bjorklund, Peter Josza, Jacobus Visser, Ann W Grant, Mats L Johansson, Jaska Paaso, Per-Erik Fägerman, Mehri Sanati and Anita Lloyd Spetz, Detection of Soot Using a Resistivity Sensor Device Employing Thermophoretic Particle Deposition, 2010, Journal of Sensors, (2010), 421072, . Licensee: Hindawi Publishing Corporation Available from: 2010-12-06 Created: 2010-12-06 Last updated: 2014-01-09

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