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.
| Original language | English |
|---|---|
| Article number | 596320 |
| Pages (from-to) | 556-566 |
| Number of pages | 11 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5963 |
| DOIs | |
| Publication status | Published - 5 Oct 2005 |
| Event | Advances in Optical Thin Films II - Jena, Germany Duration: 13 Sept 2005 → 15 Sept 2005 |
Keywords
- Effective medium
- Metal-dielectric composites
- Spectral density theory
- Surface plasmon resonance
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics
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