The scope of effective medium theory for fine metal particle solar absorbers
- 1 November 1979
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 35 (9), 668-670
- https://doi.org/10.1063/1.91249
Abstract
The treatment of an array of small metal particles as a continuous effective medium is shown to be possible for visible and near infrared frequencies at much larger particle sizes and separations than often supposed. Specific upper limits are evaluated for chromium. Results are based on the strongly correlated model. For this, the usual topology, variation, and attenuation of the field strength over average unit cell dimensions are permissible, provided such variations are characteristic of the effective medium as a whole. As wavelength decreases, the leading contribution to diffuse scattering off such composite films should come from terms proportional to λ−8 not the Rayleigh term.Keywords
This publication has 9 references indexed in Scilit:
- Microstructure dependence of the optical properties of solar-absorbing black chromeApplied Physics Letters, 1979
- Self-consistent approach to electromagnetic wave propagation in composite media: Application to model granular metalsPhysical Review B, 1978
- Electrical conductivity in inhomogeneous mediaAIP Conference Proceedings, 1978
- Optical properties of small particle composites: Theories and applicationsAIP Conference Proceedings, 1978
- Optical properties of ultrafine gold particlesPhysical Review B, 1977
- The unusual and useful optical properties of electrodeposited chrome-black filmsJournal of Physics D: Applied Physics, 1977
- Dielectric constants for mixed mediaJournal of Physics D: Applied Physics, 1977
- Abnormally low electromagnetic scattering cross sections*Journal of the Optical Society of America, 1976
- Infrared absorption by surface phonons and surface plasmons in small crystalsSurface Science, 1973