Additional effective medium parameters for composite materials (excess surface currents)

Виноградов, А. П.; Ignatov, A. I.; Merzlikin, A. M.; Tretyakov, Sergei; Simovski, Constantin

doi:10.1364/oe.19.006699

Cited by 24 publications

(13 citation statements)

References 23 publications

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“…We note that the resonant appearance of permeability retrieved from the scattering parameters can occur due to numerous factors, including the effects of spatial dispersion, 37,38 which are not relevant in our case, as well as the effects of the finite size of the sample, which imposes Fabry-Perot resonance (half-wavelength) or leads to remarkable boundary effects. [39][40][41] In our case, the anti-resonance of metamaterial composed of the 4 layers is observed and can be explained by the presence of Fabry-Perot resonance. Such resonances can be corrected by the refined retrival techniques.…”

supporting

confidence: 52%

Broadband isotropic μ-near-zero metamaterials

Belov

Slobozhanyuk

Filonov

et al. 2013

Applied Physics Letters

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Natural diamagnetism, while being a common phenomenon, is limited to permeability values close to unity. Artificial diamagnetics, to the contrary, can be engineered to provide much lower values and may even possess an effective permeability close to zero. In this letter, we provide an experimental confirmation of the possibility to obtain extremely low permeability values by manufacturing an isotropic metamaterial composed of conducting cubes. We show that the practical assembly is quite sensitive to fabrication tolerances and demonstrate that permeability of about μ=0.15 is realisable.

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supporting

confidence: 52%

Broadband isotropic μ-near-zero metamaterials

Belov

Slobozhanyuk

Filonov

et al. 2013

Applied Physics Letters

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“…For bounded layered systems the key moment of the problems is the boundary conditions. Modification of the boundary conditions by introduction of additional surface currents suggested in [75] returns the conventional permittivity and permeability of metamaterials their usual physical properties. The modified retrieval procedure based on reflection/transmission yields bulk values of effective impedance and refractive index, which are independent of system size and boundary realization, whereas the conductivities of the excess surface currents depend on the property of the interface [75].…”

Section: Beyond the Effective Medium Theory: Nonlocality Corrections mentioning

confidence: 99%

Hyperbolic metamaterials: new physics behind a classical problem

Drachev¹,

Podolskiy²,

Kildishev³

2013

Opt. Express

289

204

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Hyperbolic materials enable numerous surprising applications that include far-field subwavelength imaging, nanolithography, and emission engineering. The wavevector of a plane wave in these media follows the surface of a hyperboloid in contrast to an ellipsoid for conventional anisotropic dielectric. The consequences of hyperbolic dispersion were first studied in the 50's pertaining to the problems of electromagnetic wave propagation in the Earth's ionosphere and in the stratified artificial materials of transmission lines. Recent years have brought explosive growth in optics and photonics of hyperbolic media based on metamaterials across the optical spectrum. Here we summarize earlier theories in the Clemmow's prescription for transformation of the electromagnetic field in hyperbolic media and provide a review of recent developments in this active research area. "Far-field imaging device: planar hyperlens with magnification using multi-layer metamaterial," Opt. Express 16(25), 21142-21148 (2008). 18. Y. Xiong, Z. Liu, and X. Zhang, "A simple design of flat hyperlens for lithography and imaging with half-pitch resolution down to 20 nm," Appl. Phys. Lett. 94(20), 203108 (2009). 19. S. Thongrattanasiri and V. A. Podolskiy, "Hypergratings: nanophotonics in planar anisotropic metamaterials,"Opt. Lett. 34(7), 890-892 (2009). 20. L. Verslegers, P. B. Catrysse, Z. Yu, and S. Fan, "Deep-subwavelength focusing and steering of light in an aperiodic metallic waveguide array," Phys. using a hyperbolic medium with a single slit," Appl. Opt. 50(31), G27-G30 (2011). 24. S. Ishii, A. V. Kildishev, E. Narimanov, V. Shalaev, and V. P. Drachev, "Sub-wavelength interference pattern from volume plasmon polaritons in a hyperbolic medium," Laser Photonics Rev. 7(2), 265-271 (2013). 25. J. Kim, V. P. Drachev, Z. Jacob, G. V. Naik, A. Boltasseva, E. E. Narimanov, and V. M. Shalaev, "Improving the radiative decay rate for dye molecules with hyperbolic metamaterials," Opt. Express 20(7), 8100-8116 (2012). 26. G. V. Naik, J. Liu, A. V. Kildishev, V. M. Shalaev, and A. Boltasseva, "Demonstration of Al:ZnO as a plasmonic component for near-infrared metamaterials," "Negative refraction in semiconductor metamaterials," Nat. Mater. 6(12), 946-950 (2007). 28.

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“…Although this process is valid for lattice periods of MMs much smaller than resonance wavelength, near field effects in the boundaries of MM slabs due to spatial dispersion are generally not considered in this determination. In recent studies [6], [7], it is demonstrated that in addition to the approaches of transition layers [8] and additional bulk parameter [9], such effects can equivalently be analyzed by the concept of additional surface currents. This concept has been taken into consideration on accurate determination of electromagnetic parameters of isotropic MMs [6], [10], [11], where it is demonstrated that around the resonance region, semi-infinite reflection Manuscript coefficient at air-MM boundary is no longer equal to the negative of the reflection coefficient at MM-air boundary.…”

Section: Introductionmentioning

confidence: 99%

Semi-Infinite Reflection Coefficients of Bi-Anisotropic Metamaterial Slabs Including Boundary Effects

Hasar

Barroso

Karacalı

et al. 2015

IEEE Microw. Wireless Compon. Lett.

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We analyzed semi-infinite reflection coefficients at an interface formed by a bi-anisotropic metamaterial (MM) slab and an air region by considering boundary effects. Corresponding expressions for reflection coefficients are derived using the ray-tracing technique. Derivations are validated by simulated S-parameters of a bi-anisotropic MM slab composed of circular split-ring-resonators. It is noted that while reflection coefficients at left and right interfaces of the analyzed bi-anisotropic MM slab are closely linked to one another aside from the resonance, they are different from one another especially around resonance.Index Terms-Bi-anisotropy, boundary effects, metamaterials (MMs), reflection coefficients.

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Additional effective medium parameters for composite materials (excess surface currents)

Cited by 24 publications

References 23 publications

Broadband isotropic μ-near-zero metamaterials

Broadband isotropic μ-near-zero metamaterials

Hyperbolic metamaterials: new physics behind a classical problem

Semi-Infinite Reflection Coefficients of Bi-Anisotropic Metamaterial Slabs Including Boundary Effects

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