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Isotropic artificial media with simultaneously negative permittivity and permeability
Author(s) -
Vendik Irina,
Vendik Orest,
Odit Mikhail
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22002
Subject(s) - permittivity , condensed matter physics , dielectric , isotropy , dipole , permeability (electromagnetism) , materials science , momentum (technical analysis) , microwave , relative permittivity , composite number , resonance (particle physics) , physics , nuclear magnetic resonance , optics , chemistry , atomic physics , quantum mechanics , composite material , optoelectronics , biochemistry , finance , membrane , economics
Abstract A composite medium consisting of two sublattices of dielectric spherical particles of high permittivity and different radii embedded in a dielectric matrix of smaller permittivity are considered. It has been shown that such a composite medium reveals properties of an isotropic double negative media in the frequency range where resonance oscillations of H 111 mode in one kind of particles and E 111 mode in another kind of particles are excited simultaneously. The E 111 resonance and the H 111 resonance give rise to the magnetic dipole momentum and the electric dipole momentum correspondingly. Averaging the magnetic momentum and the electric momentum over the cells belonging to the appropriate spherical particles reveals the negative permittivity and permeability. Distribution of the electromagnetic wave outside the sphere was calculated. Influence of dispersion of the sphere permittivity and size on the effective parameters was estimated. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2553–2556, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22002