Complex resonances of a conducting sphere eccentrically coated by a dielectric one

Cottis, PG; Moyssidis, MA

dc.contributor.author	Cottis, PG	en
dc.contributor.author	Moyssidis, MA	en
dc.date.accessioned	2014-03-01T01:12:42Z
dc.date.available	2014-03-01T01:12:42Z
dc.date.issued	1997	en
dc.identifier.issn	0920-5071	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12208
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Physics, Mathematical	en
dc.subject.other	Boundary value problems	en
dc.subject.other	Coated materials	en
dc.subject.other	Conductive materials	en
dc.subject.other	Dielectric materials	en
dc.subject.other	Eigenvalues and eigenfunctions	en
dc.subject.other	Electromagnetic fields	en
dc.subject.other	Electromagnetic wave scattering	en
dc.subject.other	Mathematical models	en
dc.subject.other	Complex resonance	en
dc.subject.other	Determinant equation	en
dc.subject.other	Dielectric coating	en
dc.subject.other	Eccentricity effect	en
dc.subject.other	Resonant wavenumbers	en
dc.subject.other	Spherical eigenwaves	en
dc.subject.other	Translational addition theorem	en
dc.subject.other	Resonance	en
dc.title	Complex resonances of a conducting sphere eccentrically coated by a dielectric one	en
heal.type	journalArticle	en
heal.identifier.primary	10.1163/156939397X00611	en
heal.identifier.secondary	http://dx.doi.org/10.1163/156939397X00611	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	The effect of eccentricity on the complex resonances of a conducting sphere eccentrically coated by a dielectric one is investigated. The solution of the boundary value problem is obtained in terms of spherical eigenwaves in combination with the translational addition theorem. The resonant wavenumbers are calculated from the numerical solution of a characteristic determinantal equation. The analysis is also specialized to the case of small eccentricity and closed form expressions are derived for the resonant wavenumbers. It is found that the restriction of small eccentricity is not severe. It is also found that under the influence of eccentricity the resonant wavenumbers are considerably displaced in the complex plane. This may be used in the identification of the position and the size of inhomogeneities inside spherical bodies.	en
heal.publisher	VSP BV	en
heal.journalName	Journal of Electromagnetic Waves and Applications	en
dc.identifier.doi	10.1163/156939397X00611	en
dc.identifier.isi	ISI:A1997WG78500001	en
dc.identifier.volume	11	en
dc.identifier.issue	1	en
dc.identifier.spage	3	en
dc.identifier.epage	20	en