Journal ArticleDOI
Direct calculation of permeability and permittivity for a left-handed metamaterial
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TLDR
In this article, an electromagnetic metamaterial was fabricated and demonstrated to exhibit a "left-handed" (LH) propagation band at microwave frequencies, a situation never observed in naturally occurring materials or composites.Abstract:
Recently, an electromagnetic metamaterial was fabricated and demonstrated to exhibit a “left-handed” (LH) propagation band at microwave frequencies. A LH metamaterial is one characterized by material constants—the permeability and permittivity—which are simultaneously negative, a situation never observed in naturally occurring materials or composites. While the presence of the propagation band was shown to be an inherent demonstration of left handedness, actual numerical values for the material constants were not obtained. In the present work, using appropriate averages to define the macroscopic fields, we extract quantitative values for the effective permeability and permittivity from finite-difference simulations using three different approaches.read more
Citations
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Proceedings ArticleDOI
The myth and mysteries of Metamaterials — separating the facts from fiction?
TL;DR: A critical look at the emerging field of metamaterials, with a view to understanding their behaviors as well as performance-enhancement capabilities of small antennas.
Journal ArticleDOI
Nonlinear Tunneling of Surface Plasmon Polaritons in Periodic Structures Containing Left-Handed Metamaterial Layers
TL;DR: In this paper, the transmission of surface plasmon polaritons through a one-dimensional periodic structure is considered theoretically by using the transfer matrix approach, and it is found that tunneling structures are formed to transform nontransmitting frequencies into transmitting frequencies and hence transmission bistability is observed.
Dissertation
Novel approaches to control the propagation of electromagnetic waves : metamaterials and photonic crystals
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Wideband and multiband electromagnetically induced transparency in graphene metamaterials
TL;DR: In this paper, a multiband tunable electromagnetic induced transparency (EIT) effect in metamaterial at microwave frequency range was investigated, where the sandwich structure contains silicon dioxide and gold layers.
References
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Journal ArticleDOI
The Electrodynamics of Substances with Simultaneously Negative Values of ∊ and μ
Journal ArticleDOI
Magnetism from conductors and enhanced nonlinear phenomena
TL;DR: In this paper, it was shown that microstructures built from nonmagnetic conducting sheets exhibit an effective magnetic permeability /spl mu/sub eff/, which can be tuned to values not accessible in naturally occurring materials.
Journal ArticleDOI
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).
Journal ArticleDOI
Effective response functions for photonic bandgap materials
TL;DR: In this article, an effective description for a metalodielectric photonic bandgap (PBG) material was developed for a semi-infinite and slab observables.