Design of matched zero-index metamaterials using nonmagnetic inclusions in epsilon-near-zero media
TLDR
In this article, the electrodynamics of metamaterials that consist of resonant non-magnetic inclusions embedded in an epsilon-near-zero (ENZ) host medium are studied and analyzed in detail.Abstract:
In this work, we study the electrodynamics of metamaterials that consist of resonant non-magnetic inclusions embedded in an epsilon-near-zero (ENZ) host medium. It is shown that the inclusions can be designed in such a way that both the effective permittivity and permeability of the composite structure are simultaneously zero. Two different metamaterial configurations are studied and analyzed in detail. For a particular class of problems, it is analytically proven that such matched zero-index metamaterials may help improving the transmission through a waveguide bend, and that the scattering parameters may be completely independent of the specific arrangement of the inclusions and of the granularity of the crystal. The proposed concepts are numerically demonstrated at microwaves with a metamaterial realistic realization based on an artificial plasma.read more
Citations
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Arbitrary control of electromagnetic flux in inhomogeneous anisotropic media with near-zero index.
TL;DR: This method provides another approach to efficiently control electromagnetic flux in nonmagnetic media by designing the spatial profile of the other permittivity component in such inhomogeneous media.
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Electromagnetic Boundary Conditions Defined in Terms of Normal Field Components
Ismo V. Lindell,Ari Sihvola +1 more
TL;DR: In this article, a set of scalar conditions involving normal components of the fields D and B and their normal derivatives at a planar surface is introduced, among which different pairs can be chosen to represent possible boundary conditions for the electromagnetic fields.
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Dirac dispersion in two-dimensional photonic crystals
TL;DR: In this article, the conical Dirac dispersions in photonic crystals are used to create a metamaterial with an effective zero refractive index, and the authors show how one may obtain conical (Dirac) dispersions.
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Investigation of Fano resonance in planar metamaterial with perturbed periodicity
TL;DR: It is found that periodicity perturbation can provide a general approach for Fano resonance with ultra-strong local field enhancement.
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Possible implementation of epsilon-near-zero metamaterials working at optical frequencies
TL;DR: In this article, a possible implementation of optical epsilon-near-zero (ENZ) metamaterials is proposed based on the employment of an array of core-shell nano-spheres embedded in a dielectric medium.
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