Proceedings ArticleDOI
Imaging properties of a metamaterial superlens
Nicholas X. Fang,Xiang Zhang +1 more
- pp 225-228
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TLDR
In this paper, the subwavelength imaging quality of a metamaterial superlens is studied numerically in the wavevector domain and examples of image compression and magnification are given and resolution limits are discussed.Abstract:
The subwavelength imaging quality of a metamaterial superlens is studied numerically in the wavevector domain. Examples of image compression and magnification are given and resolution limits are discussed. A minimal resolution of /spl lambda//6 is obtained using a 36 nm silver film at 364 nm wavelength. The simulation also demonstrates the power flux is no longer a good measure to determine the focal plane of a superlens due the elevated field strength at the exit side of the metamaterial slab.read more
Citations
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Journal ArticleDOI
Angle- and Polarization-Insensitive Metamaterial Absorber using Via Array
TL;DR: This paper designs a metamaterial unit cell that is based on a split ring cross resonator (SRCR) that is insensitive to incident angles when a via array surrounds the SRR, and demonstrates the effect of the via array using full-wave simulations.
Journal ArticleDOI
Determination of the liquid chemicals depending on the electrical characteristics by using metamaterial absorber based sensor
TL;DR: In this article, a metamaterial absorber based chemical sensor has been designed and measured experimentally at the X-band frequency range (8-12 GHz) at the Finite Integration Technique based high-frequency electromagnetic CST microwave studio.
Journal ArticleDOI
Reconfigurable honeycomb metamaterial absorber having incident angular stability
TL;DR: It is shown that under oblique incidence, the ohmic losses of VO2 films especially those parallel to the direction of the incident electric field are the most important absorption principles of the proposed MMA.
Journal ArticleDOI
Liquid-Metal-Fluidically Switchable Metasurface for Broadband and Polarization-Insensitive Absorption
Daecheon Lim,Sungjoon Lim +1 more
TL;DR: A switchable metasurface for broadband and polarization-insensitive absorption, whose absorption spectrum can be fluidically switched using liquid metal, is proposed, whose absorptivity is constant at different incident polarization angles.
Journal ArticleDOI
Hybrid Metamaterial for the Secondary Radar Antenna System
TL;DR: In this paper, the authors proposed the gain enhancement of dual-band and dual-polarized asymmetric horn antenna for the secondary radar system using hybrid metamaterial techniques, which consists of the structures of woodpile electromagnetic bandgap (EBG) and wire medium structure that is placed beside the EBG structure for gain improvement of the identification friend or foe (IFF) main beam, which is operated at the center frequency of 1,060 MHz with vertical polarization.
References
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Journal ArticleDOI
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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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).
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Theory of light propagation in strongly modulated photonic crystals: Refractionlike behavior in the vicinity of the photonic band gap
TL;DR: In this article, the authors demonstrate that light propagation in strongly modulated two-dimensional (2D)/3D photonic crystals becomes refractionlike in the vicinity of the photonic bandgap.