Journal ArticleDOI
Electromagnetic resonances in individual and coupled split-ring resonators
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TLDR
In this article, the electromagnetic resonances in split ring resonators (SRRs) around 1 GHz were investigated and it was shown that both electric and magnetic fields can induce resonances, the magnetic one being the strongest.Abstract:
We study experimentally and numerically the electromagnetic resonances in split ring resonators (SRRs), around 1 GHz. For an individual SRR, we show that both electric and magnetic fields can induce resonances, the magnetic one being the strongest. The utilization of such resonant structures as efficient microwave filter is also demonstrated. The coupling between two or more SRRs can be quite complex and strongly depends on their geometrical arrangement. For small separation distances, very strong coupling, leading to sharp resonances with high quality factors are observed. In that case a magnetic field circulation which connects neighboring elements is established. The practical implications of these results for the fabrication of a left-handed metamaterial are discussed.read more
Citations
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Journal ArticleDOI
Physics of negative refractive index materials
TL;DR: In this paper, the authors review the fundamental concepts and ideas of negative refractive index materials and present the ideas of meta-materials that enable the design of new materials with a negative dielectric permittivity, negative magnetic permeability, and negative fringes.
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Comparative analysis of edge- and broadside- coupled split ring resonators for metamaterial design - theory and experiments
TL;DR: In this article, a quasi-analytical and self-consistent model was developed to compute the polarizabilities of split ring resonators (SRRs) and an experimental setup was also proposed for measuring the magnetic polarizability of these structures.
Journal ArticleDOI
Investigation of magnetic resonances for different split-ring resonator parameters and designs
Koray Aydin,Irfan Bulu,Kaan Guven,Maria Kafesaki,Costas M. Soukoulis,Costas M. Soukoulis,Ekmel Ozbay +6 more
TL;DR: In this paper, the magnetic resonance of split-ring resonators was investigated experimentally and numerically, and the dependence of the geometrical parameters on magnetic resonance frequency was studied.
Journal ArticleDOI
5.2 GHz notched ultra-wideband antenna using slot-type SRR
TL;DR: In this article, a band notch characteristic using a slot-type split ring resonator (SRR) working at microwave frequencies is used for designing a UWB antenna requiring the rejection of some frequency band, which is already in use by existing wireless services.
Journal ArticleDOI
Magnetic response of split-ring resonators in the far-infrared frequency regime.
N. Katsarakis,George Konstantinidis,A. Kostopoulos,R. S. Penciu,T. F. Gundogdu,Maria Kafesaki,Eleftherios N. Economou,Th. Koschny,Costas M. Soukoulis +8 more
TL;DR: The measured transmission spectra for propagation perpendicular to the SRRs plane show a gap around 6 THz for one of the two possible polarizations of the incident electric field; this indicates the existence of a magnetic resonance, which is verified by detailed theoretical analysis.
References
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Negative Refraction Makes a Perfect Lens
TL;DR: The authors' simulations show that a version of the lens operating at the frequency of visible light can be realized in the form of a thin slab of silver, which resolves objects only a few nanometers across.
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The Electrodynamics of Substances with Simultaneously Negative Values of ∊ and μ
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Experimental Verification of a Negative Index of Refraction
TL;DR: These experiments directly confirm the predictions of Maxwell's equations that n is given by the negative square root ofɛ·μ for the frequencies where both the permittivity and the permeability are negative.
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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.
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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).