Dispersion of dielectric composites : quasi-dynamic characterizations and applications

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Qi, Jiaran
dc.date.accessioned 2012-08-31T07:35:13Z
dc.date.available 2012-08-31T07:35:13Z
dc.date.issued 2011
dc.identifier.isbn 978-952-60-4211-4 (PDF)
dc.identifier.isbn 978-952-60-4210-7 (printed)
dc.identifier.issn 1799-4942
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/5001
dc.description.abstract Characterization of the dispersion of macroscopic electromagnetic properties of composite materials is a challenging task, but it offers an efficient and effective path to interpret features or phenomena, and to design artificial structures with desired properties. In this thesis, the quasi-dynamic homogenization is performed to characterize the dispersive electric properties of a class of dielectric composites. Although their geometry configurations are very simple, many fundamental yet significant features as well as problems appear during the quasi-dynamic homogenization process, and are thus studied in detail. The quasi-dynamic region is defined to include the quasi-static one and the frequency range close to the quasi-static limit. This thesis focuses on various homogenization models and techniques. In addition, the homogenization results by the proposed techniques are applied to explore several significant homogenization-related problems, such as quantification of the quasi-static limit, evaluation of a homogenization model, as well as the temporal pulse dynamics in dielectric (composite) materials. en
dc.format.extent Verkkokirja (2400 KB, 63 s.)
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Aalto University en
dc.relation.ispartofseries Aalto University publication series DOCTORAL DISSERTATIONS , 61/2011 en
dc.relation.haspart [Publication 1]: Jiaran Qi and Ari Sihvola. 2011. Dispersion of the dielectric Fröhlich model and mixtures. IEEE Transactions on Dielectrics and Electrical Insulation, volume 18, number 1, pages 149-154. en
dc.relation.haspart [Publication 2]: Jiaran Qi, Henrik Kettunen, Henrik Wallén, and Ari Sihvola. 2010. Quasi-dynamic homogenization of geometrically simple dielectric composites. Applied Computational Electromagnetics Society Journal, volume 25, number 12, pages 1036-1045. en
dc.relation.haspart [Publication 3]: Henrik Kettunen, Jiaran Qi, Henrik Wallén, and Ari Sihvola. 2011. Homogenization of thin dielectric composite slabs: techniques and limitations. Applied Computational Electromagnetics Society Journal, volume 26, number 3, pages 179-187. en
dc.relation.haspart [Publication 4]: Jiaran Qi, Henrik Kettunen, Henrik Wallén, and Ari Sihvola. 2010. Compensation of Fabry–Pérot resonances in homogenization of dielectric composites. IEEE Antennas and Wireless Propagation Letters, volume 9, pages 1057-1060. en
dc.relation.haspart [Publication 5]: Jiaran Qi, Henrik Kettunen, Henrik Wallén, and Ari Sihvola. 2011. Different homogenization methods based on scattering parameters of dielectric-composite slabs. Radio Science, volume 46, RS0E08, 7 pages. en
dc.relation.haspart [Publication 6]: J. Qi and A. Sihvola. 2009. Truncation effect on precursor field structure of pulse propagation in dispersive media. Progress In Electromagnetics Research B, volume 14, pages 65-86. en
dc.relation.haspart [Publication 7]: Jiaran Qi and Ari Sihvola. 2009. Evolution of the time-domain structure of electromagnetic pulse propagating in aqueous mixtures. In: Pertti Vainikainen and Tommi Laitinen (editors). Proceedings of the 8th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances (ISEMA 2009). Espoo, Finland. 1-5 June 2009. International Society for Electromagnetic Aquametry. Pages 223-230. ISBN 978-951-22-9940-9. en
dc.subject.other Electrical engineering
dc.title Dispersion of dielectric composites : quasi-dynamic characterizations and applications en
dc.type G5 Artikkeliväitöskirja fi
dc.contributor.school Sähkötekniikan korkeakoulu fi
dc.contributor.department Radiotieteen ja -tekniikan laitos fi
dc.contributor.department Department of Radio Science and Engineering en
dc.subject.keyword homogenization en
dc.subject.keyword dispersion en
dc.subject.keyword permittivity en
dc.subject.keyword S-parameter retrieval en
dc.subject.keyword angular dispersion en
dc.subject.keyword Lord Rayleigh formula en
dc.subject.keyword quasi-static and quasi-dynamic en
dc.identifier.urn URN:ISBN:978-952-60-4211-4
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.type.ontasot Doctoral dissertation (article-based) en

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