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Dielectric Properties of Water-Containing Porous Materials: Low Frequency Response of Sandstones
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.ORCID iD: 0000-0002-8279-5163
SAAB Electronic Defense Systems, Göteborg.
2013 (English)In: ISEMA 2013: Proceedings of the 10th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances / [ed] Klaus Kupfer and Norman Wagner, Weimar, Germany: MFPA Weimar , 2013, 195-202 p.Conference paper, Published paper (Refereed)
Abstract [en]

We present results of dielectric spectroscopy measurements on natural sandstones, where the pores were impregnated with water solutions of different conductivity. The measurements were fitted to an equivalent circuit containing a high-frequency Maxwell-Wagner relaxation and a low frequency response due to ion conduction and relaxation in the electrochemical double layer at the interfaces between the solid grains and the water. We propose a novel expression for the low frequency response based on a transmission line model. We also study in detail the shape of the Maxwell-Wagner relaxation in samples of porous polypropylene impregnated with transformer oil.

Place, publisher, year, edition, pages
Weimar, Germany: MFPA Weimar , 2013. 195-202 p.
Keyword [en]
dielectric relaxation, electrical conductivity, sandstone, porosity
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Engineering Science with specialization in Solid State Physics
Identifiers
URN: urn:nbn:se:uu:diva-210793OAI: oai:DiVA.org:uu-210793DiVA: diva2:664362
Conference
10th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances; 25-27 September 2013; Weimar, Germany
Available from: 2013-11-14 Created: 2013-11-14 Last updated: 2014-07-15Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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