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Detection of Soot Using a Resistivity Sensor Device Employing Thermophoretic Particle Deposition

Lutic, Doina; Pagels, Joakim LU ; Björklund, Robert; Josza, Peter; Visser, Jacobus H.; Grant, Ann W.; Johansson, Mats L.; Paaso, Jaska; Fägerman, Per-Erik and Sanati, Mehri LU , et al. (2010) In Journal of Sensors 2010.
Abstract
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... (More)
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. (Less)
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Journal of Sensors
volume
2010
publisher
Hindawi Publishing Corporation
external identifiers
  • scopus:77954602338
ISSN
1687-725X
DOI
10.1155/2010/421072
language
English
LU publication?
yes
id
ed95d503-4510-406c-a4c7-3f1e8cb47a2c (old id 1951396)
date added to LUP
2011-05-12 15:15:12
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2018-05-29 09:53:34
@article{ed95d503-4510-406c-a4c7-3f1e8cb47a2c,
  abstract     = {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.},
  articleno    = {421072},
  author       = {Lutic, Doina and Pagels, Joakim and Björklund, Robert and Josza, Peter and Visser, Jacobus H. and Grant, Ann W. and Johansson, Mats L. and Paaso, Jaska and Fägerman, Per-Erik and Sanati, Mehri and Lloyd Spetz, Anita},
  issn         = {1687-725X},
  language     = {eng},
  publisher    = {Hindawi Publishing Corporation},
  series       = {Journal of Sensors},
  title        = {Detection of Soot Using a Resistivity Sensor Device Employing Thermophoretic Particle Deposition},
  url          = {http://dx.doi.org/10.1155/2010/421072},
  volume       = {2010},
  year         = {2010},
}