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Mostrando ítems 81-90 de 110
Artículo
Effect of particle size and interparticle force on the fluidization behavior of gas-fluidized beds
(American Physical Society, 2003)
Gas-fluidized powders of fine particles display a fluidlike regime in which the bed does not have a yield strength, it expands uniformly as the gas velocity is increased and macroscopic bubbles are absent. In this paper ...
Artículo
Babinet principle applied to the design of metasurfaces and metamaterials
(American Physical Society, 2004-11-05)
The electromagnetic theory of diffraction and the Babinet principle are applied to the design of artificial metasurfaces and metamaterials. A new particle, the complementary split rings resonator, is proposed for the design ...
Artículo
Enhanced backward wave propagation in evanescent waveguides loaded with split ring resonators
(AIP Publishing, 2007)
This paper reports on the design and experimental characterization of evanescent waveguides loaded with split ring resonators SRRs supporting enhanced backward wave propagation. With respect to previous negative refractive ...
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 ...
Ponencia
Un algoritmo de desentrelazado adaptativo con la repetición de imágenes basado en lógica difusa
(2009)
Esta comunicación presenta un interpolator temporal basado en lógica difusa que es utilizado para el desentrelazado de la señal de vídeo. El objetivo es que dicho interpolador sea capaz de aprovechar una caracterísctica ...
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
Treatment of singularities and quasi-static terms in the EFIE analysis of planar structures
(Institute of Electrical and Electronics Engineers, 2002)
This paper reports on some mathematical and numerical details of the application of the electric field integral equation (EFIE) method to the analysis of planar structures printed on multilayered substrates. Closed-form ...
Artículo
Cohesion and Internal Friction of Fine Glass Beads as Affected by Small Intensity Vertical Vibration
(2009)
We have used a novel centrifuge powder tester to obtain the angle of internal friction and cohesion of fine glass beads as affected by previous vibration in the vertical direction. In the experimental procedure we use a ...
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 ...