Effective medium models for metal-dielectric composites: an analysis based on the spectral density theory

Jordi Sancho-Parramon; Salvador Bosch; Amin Abdolvand; Alexander Podlipensky; Gerhard Seifert; Heinrich Graener

doi:10.1117/12.625125

5 October 2005 Effective medium models for metal-dielectric composites: an analysis based on the spectral density theory

Jordi Sancho-Parramon, Salvador Bosch, Amin Abdolvand, Alexander Podlipensky, Gerhard Seifert, Heinrich Graener

Author Affiliations +

Proceedings Volume 5963, Advances in Optical Thin Films II; 596320 (2005) https://doi.org/10.1117/12.625125
Event: Optical Systems Design 2005, 2005, Jena, Germany

Abstract

We study different effective medium theories for describing the optical behaviour of composites consisting of spherical metallic inclusions embedded in a dielectric matrix. The analysis is performed according to the Bergman spectral density theory. This theory establishes that any effective medium model has an integral representation in terms of a function (the spectral density) that depends on the geometry of the two-phase mixture and is independent of the optical constants of the composing materials. We review classical effective medium theories (Maxwell-Garnett and Bruggeman models) according to their spectral density. Furthermore, numerical simulations based in recent works allow studying the influence of different geometric parameters in the spectral density and compare the results with the classical theories.

Citation Download Citation

Jordi Sancho-Parramon, Salvador Bosch, Amin Abdolvand, Alexander Podlipensky, Gerhard Seifert, and Heinrich Graener "Effective medium models for metal-dielectric composites: an analysis based on the spectral density theory", Proc. SPIE 5963, Advances in Optical Thin Films II, 596320 (5 October 2005); https://doi.org/10.1117/12.625125

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