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Generalized Lorentz-Lorenz method for the retrieval of plasmonic nanocluster metamaterial effective parameters

  • Author(s): Vallecchi, A
  • Sozio, V
  • Albani, M
  • Capolino, F
  • et al.
Creative Commons Attribution 4.0 International Public License
Abstract

Generalized Lorentz-Lorenz formulas are developed for the effective parameters of metamaterials composed of a periodic arrangement of plasmonic nanoclusters (NCs). Each NC exhibits both electric and magnetic polarizabilities but its dimension is in general not very subwavelength. The obtained formulas for the metamaterial effective electric and magnetic characteristics duly consider both electric and magnetic polarizabilities and naturally describe the effects of frequency and spatial dispersion. Homogenization results for a material considered here show the effects of spatial dispersion near the fundamental electric resonance. © 2013 EurAAP.

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