Experimental demonstration of a left-handed metamaterial operating at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>100</mml:mn><mml:mspace width="0.3em" /><mml:mi>GHz</mml:mi></mml:mrow></mml:math>

Gökkavas, Mutlu; Güven, Kaan; Bulu, İrfan; Aydın, Koray; Penciu, R. S.; Kafesaki, Maria; Soukoulis, Costas M.; Özbay, Ekmel

doi:10.1103/physrevb.73.193103

Cited by 117 publications

(76 citation statements)

References 18 publications

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“…The operational frequency of a given MM design is geometrically scalable to other regimes of the electromagnetic spectrum. Various MM structures have been shown to naturally couple to either the electric and / or magnetic components of light in frequency ranges from radio [14], microwave [15], mm-Wave [16], THz [13], MIR [17], NIR [18], to the near optical [19]. A great deal of effort has been exerted to create low-loss metamaterial devices such as negative index (NI) structures [15] and electromagnetic cloaks [20,21].…”

Section: Introductionmentioning

confidence: 99%

Design, theory, and measurement of a polarization-insensitive absorber for terahertz imaging

et al. 2009

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Section: Introductionmentioning

confidence: 99%

Design, theory, and measurement of a polarization-insensitive absorber for terahertz imaging

et al. 2009

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“…As expected, the transmission peak value ∼ -2.5 dB was lower than the ideal simulation result. On the other hand, by using a low-loss substrate and rather thick metal coating, we improved the ∼ -25 dB transmission peak value of our group's previous 100 GHz metamaterial demonstration [49]. Moreover, instead of photolithography techniques, we achieved the desired double-negative properties at the millimeter-wave regime by using a rather cheap technology.…”

Section: Transmission-based Qualitative Effective Medium Theory mentioning

confidence: 82%

Theoretical Study and Experimental Realization of a Low-Loss Metamaterial Operating at the Millimeter-Wave Regime: Demonstrations of Flat- and Prism-Shaped Samples

Alıcı

Özbay

2010

IEEE J. Select. Topics Quantum Electron.

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Abstract-We designed a low-loss double-negative composite metamaterial that operates at the millimeter-wave regime. A negative passband with a peak transmission value of -2.7 dB was obtained experimentally at 100 GHz. We performed transmissionbased qualitative effective medium theory analysis numerically and experimentally to prove the double-negative nature of the metamaterial. These results were supported by the standard retrieval analysis method and the study was extended by reporting the fractional bandwidth and loss of the metamaterial as the number of layers in the propagation direction increased. We numerically calculated 2-D field map and experimentally confirmed far-field radiation response of horn antenna and metamaterial lens composite. Finally, we demonstrated that the effective index of the metamaterial was negative by performing far-field angular scanning measurements for a metamaterial prism. We simulated the prism by using the Drude-Lorentz model and obtained the scattered field map in two dimensions at millimeter-wavelengths.Index Terms-Metamaterials, metaprism, millimeter wave, negative refraction.

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“…Around the resonance frequency of SRRs, the transmission through this array is expected to decrease significantly due to the effective negative permeability introduced in the medium. The unit cell dimensions of the SRRs are in the order of microns to obtain a resonance around 100 GHz [5]. When the SRR array is combined with TWs as described in [8], we obtain the composite metamaterial (CMM) structure depicted in Fig.…”

Section: Multilayer Metamaterials Structuresmentioning

confidence: 99%

“…As it is commonly used in experimental setups [5], we choose the relative permittivity of the host medium as 4.8.…”

Section: Formulations By Efiementioning

confidence: 99%

Computational analysis of complicated metamaterial structures using MLFMA and nested preconditioners

Ergül¹,

Malas²,

Yavuz³

et al. 2007

2nd European Conference on Antennas and Propagation (EuCAP 2007)

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We consider accurate solution of scattering problems involving complicated metamaterial (MM) structures consisting of thin wires and split-ring resonators. The scattering problems are formulated by the electric-field integral equation (EFIE) discretized with the Rao-WiltonGlisson basis functions defined on planar triangles. The resulting dense matrix equations are solved iteratively, where the matrix-vector multiplications that are required by the iterative solvers are accelerated with the multilevel fast multipole algorithm (MLFMA). Since EFIE usually produces matrix equations that are ill-conditioned and difficult to solve iteratively, we employ nested preconditioners to achieve rapid convergence of the iterative solutions. To further accelerate the simulations, we parallelize our algorithm and perform the solutions on a cluster of personal computers. This way, we are able to solve problems of MMs involving thousands of unit cells.

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Experimental demonstration of a left-handed metamaterial operating at100GHz

Cited by 117 publications

References 18 publications

Design, theory, and measurement of a polarization-insensitive absorber for terahertz imaging

Design, theory, and measurement of a polarization-insensitive absorber for terahertz imaging

Theoretical Study and Experimental Realization of a Low-Loss Metamaterial Operating at the Millimeter-Wave Regime: Demonstrations of Flat- and Prism-Shaped Samples

Computational analysis of complicated metamaterial structures using MLFMA and nested preconditioners

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