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Proceedings Paper

Scattering of electromagnetic waves by small magnetic ellipsoidal particles
Author(s): Shruti Puri; Gautam Mukhopadhyay
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Paper Abstract

The scattering of electromagnetic (e.m.) waves by small ellipsoidal particles having non-zero dielectric or magnetic susceptibility have been studied extensively. The studies in case the particles have non-zero dielectric as well as magnetic susceptibility have been limited to small uncoated particles of spherical shapes. We present here a study of the scattering of e.m. waves by small ellipsoidal particles having non-zero dielectric as well as magnetic susceptibility. We refer to such particles as magnetic particles. The ellipsoidal particles in our case can have multiple ellipsoidal coatings having common focii and axes. By deriving analytical expressions for the magnetic and electric scattering coefficients for such particles, we show that there is drastic difference between the backscattering as well as forward scattering patterns of the non-magnetic and magnetic particles. We also compare the scattering patterns of magnetic ellipsoidal and spherical particles. Furthermore, we derive Maxwell-Garnett formula for multiply coated magnetic ellipsoidal particles. To our knowledge, our results are new and should be useful for plasmonics and meta-materials designs.

Paper Details

Date Published: 26 August 2008
PDF: 11 pages
Proc. SPIE 7032, Plasmonics: Metallic Nanostructures and Their Optical Properties VI, 70322C (26 August 2008); doi: 10.1117/12.794093
Show Author Affiliations
Shruti Puri, Indian Institute of Technology, Bombay (India)
Gautam Mukhopadhyay, Indian Institute of Technology, Bombay (India)


Published in SPIE Proceedings Vol. 7032:
Plasmonics: Metallic Nanostructures and Their Optical Properties VI
Mark I. Stockman, Editor(s)

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