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Author:Rimpiläinen, Tommi
Title:Anisotrooppisen pallon sähköinen vaste
Electric response of an anisotropic sphere
Publication type:Master's thesis
Publication year:2011
Pages:ix + 71 s. + liitt. 5      Language:   fin
Department/School:Radiotieteen ja -tekniikan laitos
Main subject:Sähkömagnetiikka   (S-96)
Supervisor:Sihvola, Ari
Instructor:Wallén, Henrik
Electronic version URL: http://urn.fi/URN:NBN:fi:aalto-201207022712
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark Aalto  1338   | Archive
Keywords:sphere
anisotropy
dyad
polarizability
systropy
pallo
anisotropia
dyadi
polarisoituvuus
systropia
Abstract (eng): The document is about the electric response of anisotropic spheres.
The anisotropy is defined by a permittivity dyadic in spherical coordinates.
The components of the permittivity dyadics are assumed to be constant in this coordinate system.

A sphere with such anisotropy is called systropic in this document.
It is shown that when the systropic sphere is in a homogeneous medium, a field solution can be found with a method that is in part analytical and in part numerical.
A polarizability dyadic is constructed using the field solution.
Abstract (fin): Työ käsittelee anisotrooppisten pallojen sähköistä vastetta staattisessa sähkökentässä.
Tarkasteltavat pallot ovat anisotrooppisia siten, että väliaineen permittiivisyys pallon sisällä on dyadi, jonka komponentit ovat vakioita pallokoordinaatistossa.

Kuvatunlaisia palloja kutsutaan työssä systrooppisiksi.
Tilanteessa, jossa systrooppinen pallo on homogeenisessa väliaineessa, esitetään kenttäratkaisu.
Ratkaisun etsimiseen käytetään menetelmää, joka on osin analyyttinen ja osin numeerinen.
Kenttäratkaisua käytetään polarisoituvuusdyadin muodostamiseen.
ED:2011-09-29
INSSI record number: 42839
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