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Total reflection and transmission by epsilon-near-zero metamaterials with defects

Yadong Xu, +1 more
- 23 Dec 2010 - 
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TLDR
In this article, the authors investigated wave transmission through an epsilon-near-zero metamaterial waveguide embedded with defects, and they showed that by adjusting the geometric sizes and material properties of the defects, total reflection and even transmission can be obtained, despite the impedance mismatch of EPSilon near-zero material with free space.
Abstract
In this work, we investigate wave transmission through an epsilon-near-zero metamaterial waveguide embedded with defects. We show that by adjusting the geometric sizes and material properties of the defects, total reflection and even transmission can be obtained, despite the impedance mismatch of epsilon-near-zero material with free space. Our work can greatly simplify the design of zero-index material waveguide applications by removing the dependence on permeability.

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Journal ArticleDOI

Wave–matter interactions in epsilon-and-mu-near-zero structures

TL;DR: The notion of 'static optics', in which the electricity and magnetism are decoupled, while the fields are temporally dynamic, is explored, which occurs when both the relative effective permittivity and permeability attain near-zero values at a given operating frequency.
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Planar gradient metamaterials

TL;DR: In this article, the authors summarize the progress made in the theoretical modeling of gradient metamaterials, in their experimental implementation and in the design of functional devices for wave bending and focusing in free space, for supporting surface plasmon polaritons and for the realization of trapped rainbows.
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Realizing bending waveguides with anisotropic epsilon-near-zero metamaterials

TL;DR: In this paper, the authors studied metamaterials with an anisotropic effective permittivity tensor in which one component is near zero, and they found that such a material can be used to control wave propagation and construct almost perfect bending waveguides with high transmission rate.
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Acoustic cloaking by a near-zero-index phononic crystal

TL;DR: In this article, a phononic crystal (PC) composed of a square array of densely packed square iron rods in air is used to construct a near zero-refractive index (ZRI) material.
References
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Composite Medium with Simultaneously Negative Permeability and Permittivity

TL;DR: A composite medium, based on a periodic array of interspaced conducting nonmagnetic split ring resonators and continuous wires, that exhibits a frequency region in the microwave regime with simultaneously negative values of effective permeability and permittivity varepsilon(eff)(omega).
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Controlling Electromagnetic Fields

TL;DR: This work shows how electromagnetic fields can be redirected at will and proposes a design strategy that has relevance to exotic lens design and to the cloaking of objects from electromagnetic fields.
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TL;DR: Recent advances in metamaterials research are described and the potential that these materials may hold for realizing new and seemingly exotic electromagnetic phenomena is discussed.
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Optical Conformal Mapping

TL;DR: A general recipe for the design of media that create perfect invisibility within the accuracy of geometrical optics is developed, which can be applied to escape detection by other electromagnetic waves or sound.
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