Modelling heterogeneous dielectric mixtures in the terahertz regime: A quasi-static effective medium theory

Maik A Scheller, Steffen Wietzke, Christian Jansen, Martin Koch

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Abstract

We present a quasi-static effective medium theory for heterogeneous dielectric mixtures consisting of particles embedded in a host matrix. The model remains valid for all mixture concentrations and can also consider particle shape distributions, thus overcoming the restrictions of previous approaches. The theory is experimentally validated by highly accurate terahertz time domain spectroscopy measurements on three different polymeric compound systems. A comparison with commonly applied theories is given.

Original languageEnglish (US)
Article number065415
JournalJournal of Physics D: Applied Physics
Volume42
Issue number6
DOIs
Publication statusPublished - 2009
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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