Electromagnetic behaviour of left-handed materials

Kafesaki, Maria; Koschny, Thomas; Zhou, Jiangfeng; Katsarakis, N.; Tsiapa, I.; Economou, E. N.; Soukoulis, Costas M.

doi:10.1016/j.physb.2006.12.044

Cited by 12 publications

(11 citation statements)

References 26 publications

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“…For example, the judicious placement of materials with a negative dielectric constant and negative magnetic permeability yielded unique phenomena related to negative refraction, with the possibility of bending light the "wrong way". [1][2][3][4] Consequently, any diverging characteristics could be minimized yielding perfect lenses. The possibility of thus controlling electromagnetic fields 5 has yielded in the past decade, even more fascinating possibilities ranging from higher efficiency antennae to invisibility cloaks.…”

Section: Introductionmentioning

confidence: 99%

Layered thermal metamaterials for the directing and harvesting of conductive heat

et al. 2015

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The utility of a metamaterial, assembled from two layers of nominally isotropic materials, for thermal energy re-orientation and harvesting is examined. A study of the underlying phenomena related to heat flux manipulation, exploiting the anisotropy of the thermal conductivity tensor, is a focus. The notion of the assembled metamaterial as an effective thermal medium forms the basis for many of these investigations and will be probed. An overarching aim is to implement in such thermal metamaterials, functionalities well known from light optics, such as reflection and refraction, which in turn may yield insights on efficient thermal lensing. Consequently, the harness and dissipation of heat, which are for example, of much importance in energy conservation and improving electrical device performance, may be accomplished. The possibilities of energy harvesting, through exploiting anisotropic thermopower in the metamaterials is also examined. The review concludes with a brief survey of the outstanding issues and insights needed for further progress.

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Section: Introductionmentioning

confidence: 99%

Layered thermal metamaterials for the directing and harvesting of conductive heat

et al. 2015

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“…Since the demonstration of the first left-handed material in 2000 [14], operating in microwaves, many studies have been devoted to the understanding of those materials [15][16][17][18][19], to their optimization [20][21][22][23] and to the extension of their operation frequency [24][25][26][27][28]. These studies resulted, among others, to design rules for SRRs appropriate for specific frequency regimes or specific applications.…”

Section: Introductionmentioning

confidence: 99%

Multi-gap individual and coupled split-ring resonator structures

Penciu¹,

Aydın²,

Kafesaki³

et al. 2008

Opt. Express

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106

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Abstract:We present a systematic numerical study, validated by accompanied experimental data, of individual and coupled split ring resonators (SRRs) of a single rectangular ring with one, two and four gaps. We discuss the behavior of the magnetic resonance frequency, the magnetic field and the currents in the SRRs, as one goes from a single SRR to strongly interacting SRR pairs in the SRR plane. We show that coupling of the SRRs along the E direction results to shift of the magnetic resonance frequency to lower or higher values, depending on the capacitive or inductive nature of the coupling. Strong SRR coupling along propagation direction usually results to splitting of the single SRR resonance into two distinct resonances, associated with peculiar field and current distributions.

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“…The last decade, the study of metamaterials [6][7][8][9], i.e., of artificially structured composites that exhibit electromagnetic properties not available in naturally occuring materials, was really intense. Among them, the magnetic metamaterials (MMs), which exhibit significant magnetic properties up to THz and optical frequencies [10,11], are typically comprised of split-ring resonators (SRRs) [12]. It was recently demonstrated that DBs can be generated in nonlinear MMs, both in one and two dimensions [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Breather Induction by Modulational Instability in Binary Metamaterials

2009

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It is demonstrated numerically that nonlinear localized excitations in the form of dissipative discrete breathers can be induced spontaneously through the mechanism of modulational instability in nonlinear magnetic metamaterials comprised of binary arrays of split-ring resonators. Specifically, a variety of high amplitude dissipative breathers can be produced by frequency chirping of the driving field, which concentrate a large portion of the total energy of the metamaterial within only a few lattice sites.

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Electromagnetic behaviour of left-handed materials

Cited by 12 publications

References 26 publications

Layered thermal metamaterials for the directing and harvesting of conductive heat

Layered thermal metamaterials for the directing and harvesting of conductive heat

Multi-gap individual and coupled split-ring resonator structures

Breather Induction by Modulational Instability in Binary Metamaterials

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