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Effective permittivity of layered dielectric sphere composites

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Abstract

A straightforward model is presented for analysing the effective permittivities of layered dielectric sphere composites. Using the present model, the effective permittivity, ɛeff, of layered dielectric sphere composites can be deduced using classical two-phase dielectric mixture formulae in two steps: first, the effective permittivity, ɛincl, of the inclusions is calculated by taking the layered dielectric sphere inclusions as sub-composites; and second, the effective permittivity, ɛeff, of the composites is found by substituting the layered dielectric sphere inclusions with homogeneous spheres whose permittivity is equal to ɛincl. The present model is applicable to multi-layer sphere composites. Experiments on resin-based hollow bead composites show that the present model accurately predicts the effective permittivity of layered dielectric sphere composites.

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Authors and Affiliations

  1. Department of Physics,, National University of Singapore,, Lower Kent Ridge Road,, Singapore, 119260 scrip4100@leonis.nus.edu.sg

    L. F. Chen, C. K. Ong & B. T. G. Tan

  2. DSO National Laboratories,, 20 Science Park Drive,, Singapore, 118230

    C. R. Deng

Authors
  1. L. F. Chen
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  2. C. K. Ong
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  3. B. T. G. Tan
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  4. C. R. Deng
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Chen, L.F., Ong, C.K., Tan, B.T.G. et al. Effective permittivity of layered dielectric sphere composites. Journal of Materials Science 33, 5891–5894 (1998). https://doi.org/10.1023/A:1004487006512

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