Title :
Generalized Lorentz-Lorenz method for the retrieval of plasmonic nanocluster metamaterial effective parameters
Author :
Vallecchi, A. ; Sozio, V. ; Albani, Matteo ; Capolino, Filippo
Author_Institution :
Dept. of Inf. Eng., Univ. of Siena, Siena, Italy
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.
Keywords :
nanophotonics; nanostructured materials; optical metamaterials; permeability; permittivity; plasmonics; polarisability; electric polarizabilities; electric resonance; frequency dispersion; generalized Lorentz-Lorenz method; homogenization; magnetic polarizabilities; plasmonic nanocluster metamaterial effective parameters; spatial dispersion; Lattices; Magnetic materials; Magnetic resonance; Metamaterials; Permittivity; Plasmons; Metamaterials; constitutive relations; electromagnetic multipoles; scattering;
Conference_Titel :
Antennas and Propagation (EuCAP), 2013 7th European Conference on
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-2187-7
Electronic_ISBN :
978-88-907018-1-8
