Near-field imaging with a loaded wire medium

Kaipa, Chandra S. R.; Yakovlev, Alexander B.; Maslovski, Stanislav I.; Silveirinha, Mário G.

doi:10.1103/physrevb.86.155103

Cited by 17 publications

(25 citation statements)

References 30 publications

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“…These materials are very promising due to simple fabrication technologies and various breakthrough applications, such as: superlensing [1,2,3], improvement of magnetic resonance imaging systems [4,5], biosensing applications [6], shaping of waves at deep subwavelength scales [7] and design of high quality cavities [8].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of magnetic Purcell factor in wire metamaterials

Krasnok

Slobozhanyuk

Belov

et al. 2014

Proceedings of the International Conference Days on Diffraction 2014

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We present an experimental study of the magnetic Purcell effect in finite arrays of the wire metamaterial. By directly measuring the spatial-frequency map of the Purcell factor we explicitly demonstrate how the Purcell factor is enhanced at the FabryPérot resonances of the wire metamaterial block in microwave frequency range. The experimental results are in a good agreement with theoretical and numerical estimations.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of magnetic Purcell factor in wire metamaterials

Krasnok

Slobozhanyuk

Belov

et al. 2014

Proceedings of the International Conference Days on Diffraction 2014

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“…Initial development of metamaterials commenced in the domain of electromagnetics and departed from microwave and radio frequency range, where the large size of possible "meta-atoms" allowed easy and precise fabrication. This area is important for radio-engineering and mobile communications [41][42][43][44], as well as many important applications such as metamaterial lenses [45][46][47], wave-guides [48][49][50], detectors [51,52] or metasurfaces [53,54] to improve magnetic resonance imaging. Further development was mostly driven by the quest for bringing metamaterials into optics [55], which seems to yield fruitful nonlinearities not only on a traditional plasmonic track [56][57][58][59][60][61][62][63][64][65] and fish-nets [66][67][68][69][70][71][72] but also with all-dielectric designs [73][74][75][76][77][78][79][80].…”

Section: Introductionmentioning

confidence: 99%

New degrees of freedom in nonlinear metamaterials

Lapine

2017

Phys. Status Solidi B

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This is an overview of the recent achievements in exploiting novel degrees of freedom in metamaterial design, which enable sophisticated nonlinear coupling mechanisms and bring enhancement to nonlinear behavior. One of the novel paradigms makes use of mechanical feedback, achieved by embedding electromagnetic resonators within elastic medium or engineering explicit elastic links between them, such as rotational feedback. These designs provide broad‐band self‐adjustable resonances, self‐oscillations, chaotic regimes, nonlinear chirality and, spontaneous chiral symmetry breaking. With this respect, a range of implementations has been analyzed, from flexible helices for microwaves to artificial electrostriction in optics. Another concept benefits from multi‐frequency operation, where the properties in completely distinct frequency ranges become entangled through specific metamaterial design –for example, direct optical coupling can be introduced between microwave resonators, providing an independent interaction channel. It was also found that hyperbolic metamaterials can bring notable benefits to classical nonlinear processes by imposing unusual phase matching solutions, with a rich choice of matching combinations. Finally, the boundary structure of metamaterials add yet another possibility to control their properties. Overall, the recent progress in these topics suggests a very positive outlook into the future of nonlinear metamaterials.

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“…For example, lenses for near-field sub-wavelength imaging, based either on the conversion of free-space evanescent fields into propagating waves within the wire medium (i.e., operation in the canalization region) [31][32][33][34][35][36][37][38] or amplification of evanescent field components, 39 are commonly used to overcome the diffraction limit. Other applications include the realization of negative refraction media, [40][41][42] broadband absorbers, [43][44][45] increased bandwidth backward-wave metamaterials with the use of nanowire arrays, [46][47][48][49] and the realization of perfect electrical conductor/perfect magnetic conductor (PEC/PMC)-walled waveguides; the latter one being an attractive solution for (sub)millimeter-wave guiding structures.…”

Section: Introductionmentioning

confidence: 99%

Dispersion effects in Fakir's bed of nails metamaterial waveguides

Papantonis

Lucyszyn

Shamonina

2014

Journal of Applied Physics

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Articles you may be interested inEffects of inductive waves on multi-band below-cut-off transmission in waveguides loaded with dielectric metamaterials AIP Advances 4, 107129 (2014); 10.1063/1.4898706 Review Article: The weak interactive characteristic of resonance cells and broadband effect of metamaterials AIP Advances 4, 100701 (2014); 10.1063/1.4897915 Volumetric negative-refractive-index metamaterials based upon the shunt-node transmission-line configuration Experimental verification of backward-wave radiation from a negative refractive index metamaterialThe propagation characteristics of electromagnetic waves in waveguides implemented using the "Fakir's bed of nails" are investigated both analytically and numerically. The classical metal walls of a parallel-plate waveguide are replaced by a Fakir's bed of nails metamaterial having arbitrary pin lengths on both walls; treated as a homogenized effective spatially dispersive dielectric. A modal analysis of the electromagnetic fields is presented for the first time, and dispersion expressions for the propagating modes are derived analytically and independently validated with full-wave numerical simulations. An equivalent transmission line model is also given, and similarities with the classical metal-dielectric-metal structure commonly used in optics are discussed. V C 2014 AIP Publishing LLC. [http://dx.

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Near-field imaging with a loaded wire medium

Cited by 17 publications

References 30 publications

Experimental investigation of magnetic Purcell factor in wire metamaterials

Experimental investigation of magnetic Purcell factor in wire metamaterials

New degrees of freedom in nonlinear metamaterials

Dispersion effects in Fakir's bed of nails metamaterial waveguides

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