Abstract
Effective dielectric responses of graded cylindrical composites are investigated when anexternal uniform field is applied to the composites. Considering linear random compositesof cylindrical particles with a specific dielectric function, which varies along the radialdirection of the particles, we have studied three cases of dielectric profiles: exponentialfunction, linear and power-law profiles. For each case, the effective dielectric response ofgraded composites is given on the basis of exact solutions of the local potentials ofcomposites in the dilute limit. For a larger volume fraction, we have proposedan effective medium approximation to estimate the effective dielectric response.
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