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Mostrando ítems 41-50 de 58
Artículo
Correct denition of the Poynting vector in electrically and magnetically polarizable medium reveals that negative refraction is impossible: comment
(Optical Society of America, 2009)
It is shown that, when all macroscopic currents associated with the electric and magnetic polarizability are properly accounted for, the standard expression for the Poynting vector and the average work exerted by the ...
Artículo
Signal-to-noise ratio evaluation in resonant ring metamaterial lenses for MRI applications
(IOP Publishing Ltd., 2011)
In this paper, we present a method for the evaluation of the signalto- noise ratio in magnetic resonance imaging (MRI) coils loaded with resonant ring metamaterial lenses, in the presence of a conducting phantom resembling ...
Artículo
Comments on "Internal impedance of conductors of rectangular cross section"
(Institute of Electrical and Electronics Engineers, 2001)
The alternate current (ac) internal impedance of rectangular cross-sectional conductors used as transmission lines and interconnects in microwave and digital printed circuits were analyzed. The difference between the real ...
Artículo
Contribución al análisis del impacto de la creación de una red de vías ciclistas en la economía local y en la imagen turística de las ciudades. El caso de Sevilla
(Editorial de la Universidad de Sevilla, 2020)
This paper analyzes the impact of the creation of a continuous network of segregated cycle paths on local economy and on the touristic image of cities, through the case study of the city of Seville by developing a ...
Artículo
Realistic metamaterial lenses: Limitations imposed by discrete structure
(American Physical Society, 2010)
We study the peculiarities of a metamaterial "superlens," caused by its discrete structure and finite size. We show that precise modeling of the lens provides remarkable distinctions from continuous medium approximation. ...
Artículo
Artificial magnetic metamaterial design by using spiral resonators
(American Physical Society, 2004)
A metallic planar particle, that will be called spiral resonator (SR), is introduced as a useful artificial atom for artificial magnetic media design and fabrication. A simple theoretical model which provides the most ...
Artículo
Accurate modeling of split ring metamaterial lenses for magnetic resonance imaging applications
(AIP Publishing, 2009)
The usefulness of thin split ring metamaterial slabs for imaging applications, including magnetic resonance imaging applications, has attracted some attention in the past years. However, the small number of unit cells ...
Artículo
On the resonances and polarizabilities of split ring resonators
(AIP Publishing, 2005)
In this paper, the behavior at resonance of split ring resonators SRRs and other related topologies, such as the nonbianisotropic SRR and the broadside-coupled SRR, are studied. It is shown that these structures exhibit ...
Artículo
Comment on "left-handed-media simulation and transmission of EM waves in subwavelength split-ring-resonator-loaded metallic waveguides"
(American Physical Society, 2003)
Artículo
Accurate circuit analysis of resonant-type left handed transmission lines with inter-resonator coupling
(AIP Publishing, 2006)
In this paper, a circuit model for the description of left handed transmission lines based on complementary split rings resonators CSRRs is proposed. As compared to previous models, coupling between adjacent resonators ...