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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Journal ArticleDOI
Light confining effect in a zero-index waveguide with unenclosed sidewalls and a design scheme of a reflectionless polarization converter
Wang Yongxing,Xu Ping +1 more
TL;DR: This work demonstrates the light confining effect in an epsilon-mu-near-zero (EMNZ) waveguide with unenclosed sidewalls and proposes a new design scheme of a reflectionless polarization converter without using an optical active medium or structures that provides the possibility of the application of zero-index metamaterials in the field of modulation of optical polarization.
Journal ArticleDOI
Electromagnetic Boundary Conditions Defined in Terms of Normal Field Components
Ismo V. Lindell,Ari Sihvola +1 more
TL;DR: In this paper, 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.
Journal ArticleDOI
All Dielectric Terahertz Left-Handed Metamaterial Based on Mie Resonance Coupling Effects
Ju Gao,Yiming Zhang,Qiang Wu +2 more
TL;DR: In this paper, all dielectric left-handed metamaterial operating in THz band based on the deep coupling of higher mode Mie resonance is presented and opens a gate to highly control of electromagnetic wave in dielectrics metammaterial by using the coupling between the unit cells.
Journal ArticleDOI
"Short circuit" of power flux of light in near-zero refractive index metamaterials.
Wang Yongxing,Xu Ping +1 more
TL;DR: In the area of transmission and processing of optical signal in two-dimensional integrated optical systems, the EMNZ-ENZ composite structure constructed employs potential application prospects and it is discovered that the embedded ENZ components enhance the stability of transmission property of impure EMNZ effectively.
Proceedings ArticleDOI
Resonator structures on AlN ceramics surface treated by laser radiation
Paweł Kozioł,Arkadiusz J. Antończak,Bogusz Stępak,P. Gorski,Michał Walczakowski,Norbert Palka,Krzysztof M. Abramski +6 more
Abstract: In this paper a method for producing resonant structures using laser micromachining is presented. In the spot of laser
beam impact on AlN ceramics surface a conductive aluminum layer is formed. Compilation of process parameters allows
for the fabrication of structures with resistance at Rs ~ 0.01Ω/Rs. It has been also found out that the maximum value of resistance for which spiral resonator structures manifest their unique properties is at the level of Rs = 1.43 Ω.
Furthermore, the occurrence of mutual capacity which value is dependent on the arrangement of individual SR structures
with respect to each other was observed and examined. Based on satisfactory results for SR structures, it has been
attempted to produce a resonant structures dedicated to the THz range based on the process of direct metallization of
AlN ceramics surface. As a result, the Split Ring Resonator structure whose properties were verified by using the
THz -TDS method was manufactured. In case of the field E perpendicular to SRR structure and one resonance area for
0.50 THz with field E parallel to the structure, two characteristic resonant dips for 0.22 THz and 0.46 THz were
obtained. The studies confirmed that the method of direct metallization of AlN ceramics allows to produce resonant
structures in the THz range.
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