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Resistance Sensor Based on Thermophoresis for Soot in Diesel Exhaust

Published online by Cambridge University Press:  01 February 2011

Robert Bjorklund ,
Mats L. Johansson ,
Ann Grant ,
Peter Jozsa ,
Per-Erik Fägerman ,
Jaska Paaso ,
Andreas Larsson ,
Doina Lutic  and
Anita Lloyd Spetz
Robert Bjorklund
Affiliation:
[email protected], Linköping University, Linköping, Sweden
Mats L. Johansson
Affiliation:
[email protected], Volvo Car Corp., Göteborg, Sweden
Ann Grant
Affiliation:
[email protected], Volvo Technology Corp., Göteborg, Sweden
Peter Jozsa
Affiliation:
[email protected], Volvo Technology Corp., göteborg, Sweden
Per-Erik Fägerman
Affiliation:
[email protected], Mandalon Technologies AB, Linköping, Sweden
Jaska Paaso
Affiliation:
[email protected], Selmic OY, Oulu, Finland
Andreas Larsson
Affiliation:
[email protected], Sintef ICT, Blindern, Norway
Doina Lutic
Affiliation:
[email protected], Iasi University, Iasi, Romania
Anita Lloyd Spetz
Affiliation:
[email protected], Linköping University, Linköping, Sweden
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Abstract

A resistance sensor for use in diesel exhaust is reported. Several soot deposition mechanisms contribute to collection on the sensing electrodes. The sensor is designed to enhance the temperature difference between the electrode surface and the ambient. The resulting thermophoretic force on nanoparticles enhances soot deposition. Exhaust soot concentrations were shown to correlate with resistance decreases and the effect of thermophoresis was studied.

Keywords

sensorsemiconductingthermal conductivity
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1253: Symposium K – Functional Materials and Nanostructures for Chemical and Bochemical Sensing , 2010 , 1253-K14-03
Copyright
Copyright © Materials Research Society 2010

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