منابع مشابه
Polarizability of a dielectric hemisphere
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We experimentally demonstrate for the first time the focusing of optical beams within an inhomogeneous dielectric metamaterial with space-variant polarizability, implemented by etching subwavelength structures into a Silicon slab. Light focusing is obtained by creating an artificial slab material with graded refractive index profile. The local refractive index within the slab is modulated by co...
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Solutions for simple, canonical problems are important in electromagnetics, because they can be often utilized in more complicated problems. This thesis consists of analyses of some basic canonical objects and fundamental principles of electromagnetic theory. One of the fundamental objects analyzed in this thesis is an ellipsoid, and especially a layered ellipsoid. Although it is a basic and cl...
متن کاملElectrostatic spectrum of renormalized polarizability for nonpolar dielectric
The Drude–Lorentz model of a nonpolar dielectric with the simple cubic, face-centered and body-centered crystal lattice structures is considered. The electrostatic spectral density of the renormalized polarizability is found. The problem is equivalent to the calculation of the electronic density of states in the model. The obtained spectra are analyzed and the critical points are identi ed. The...
متن کاملAnalysis of a Rectangular Slot Antenna Loaded by a Dielectric Hemisphere with Double Dielectric Coatings
A rigorous analysis method is provided for a rectangular slot antenna loaded by a dielectric hemisphere with double dielectric coatings. The method is an integral equation approach and the moment method solution is sought. The antenna input impedance and radiation patterns are obtained and compared with the case with a single dielectric coating layer. The bandwidth of the antenna is found to be...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2007
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.2769288