Reciprocal space approach to effective constitutive parameters of periodic composites

Anatoliy V. Goncharenko, Vladimir U. Nazarov, Anatoliy O. Pinchuk*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We adopt a technique previously used for crystalline solids to calculate the effective permittivity of periodic nanostructured composites. Our technique, which is based on the reciprocal space representation of a mesoscopic permittivity tensor, allows one to accurately take into account the local field corrections to the effective permittivity of 2D and 3D metamaterials made of lossy anisotropic constituents. To demonstrate the feasibility and to assess the convergence and accuracy of computational procedure used, we consider two 2D geometries for which exact analytical solutions are known (checkerboard geometry and square geometry) and one geometry, for which an exact solution is known in an asymptotic limit (quasi-one-dimensional geometry). It has been shown that the accuracy of the method can be improved when using Keller'ss duality relation.

Original languageAmerican English
Article number109257
JournalComputational Materials Science
Volume171
DOIs
StatePublished - Jan 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

  • Composites
  • Effective permittivity
  • Reciprocal space
  • Theory of homogenization

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