Spectral function of a composite from reflectance data

A. R. Day, M. F. Thorpe, A. R. Grant, A. J. Sievers

Research output: Contribution to journalConference articlepeer-review

16 Scopus citations


In the Bergman-Milton spectral representation for the effective dielectric constant of a composite all relevant geometric information is captured in a spectral function that is independent of material properties. We present numerical simulations of the reflectance of a model two component composite, where both components have temperature-dependant dielectric resonances, and show that the spectral function can be extracted from the data. The same spectral function is obtained from simulation data corresponding to different temperatures but the resolution depends on the width of the resonance line and is greatest at low-temperatures.

Original languageEnglish (US)
Pages (from-to)17-20
Number of pages4
JournalPhysica B: Condensed Matter
Issue number1-3
StatePublished - Apr 2000
EventThe 5th International Conference on Electrical Transport and Optical Properties of Inhomogeneous Media (ETOPIM5) - Kowloon Tong, Hong Kong
Duration: Jun 21 1999Jun 25 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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