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Type: Artigo de periódico
Title: RLC Circuit Model for the Scattering of Light by Small Negative Refractive Index Spheres
Author: Ambrosio, LA
Hernandez-Figueroa, HE
Abstract: We study the scattering properties of very small spheres made of a negative refractive index (NRI) using circuit network principles. The Lorenz-Mie theory is used to represent the transverse magnetic and transverse electric scattering coefficients based on resistor, inductor, and capacitor (RLC) ladder circuit models derived from continued fractions. The lumped elements are then analyzed and a comparison is made between these new elements and those expected for conventional positive refractive index spheres. This provides an alternative interpretation for the fact that the scattering efficiency Q(sca) for NRI spheres with size parameters x << 1 does not always obey Rayleigh's formula Q(sca) similar to x(4). The RLC circuits obtained here, besides being very simple, provide accurate physical insights into the problem of the scattering of light by NRI spheres, therefore serving as a new theoretical background for studying the scattering properties of negative refractive index metamaterials.
Subject: Left-handed materials
Mie theory
scattering theory
Country: EUA
Editor: Ieee-inst Electrical Electronics Engineers Inc
Rights: fechado
Identifier DOI: 10.1109/TNANO.2012.2221739
Date Issue: 2012
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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