Results 211 to 220 of about 22,471 (262)

Absorption of electromagnetic waves in hexagonal perovskites

Soviet Journal of Low Temperature Physics, 1988
It is shown that the linear magnetoelectric effect of exchange type in exchange-noncollinear magnets may cause a direct absorption of electromagnetic field by the exchange branches of the magnon spectrum.
V. G. Belykh, I. M. Vitebskii, V. L. Sobolev, T. K. Soboleva   +3 more
openaire   +1 more source

Polymeric nanocomposites for electromagnetic wave absorption

Journal of Materials Science, 2009
The need for protecting human or devices from harm and for keeping something from being detected by other instruments is spawning a world of attention in the development of novel electromagnetic (EM) wave absorption materials. An ideal EM wave absorber is necessary to have light weight, thin thickness, high EM wave absorption, broad width, tunable ...
Jia Huo, Li Wang, Haojie Yu
openaire   +1 more source

Use of Ferrites for Absorption of Electromagnetic Waves

IEEE Transactions on Electromagnetic Compatibility, 1985
Ferrites have been known as good absorbers of electromagnetic waves for some forty years. They are very effective against the conventional radar using signals with small relative bandwidth, but they should have almost no effect on radar signals with large relative disappointment if this fact is overlooked.
openaire   +1 more source

Electromagnetic Wave Absorption in Liquid HEII

2007 17th International Crimean Conference - Microwave & Telecommunication Technology, 2007
The problem of possible correlation between macroscopical mechanical motion in HeII and its electrical properties is not studied practically till now. The attempt was made to determine the connection between mechanical relative motion of normal and superfluid components of HeII and its electrical performances using disk dielectric resonator (DDR ...
V. N. Derkach, S. I. Tarapov, R. V. Golovashchenko, E. Ya. Rudavskii, S. P. Rubets, A. S. Rybalko   +5 more
openaire   +1 more source

Absorption of Electromagnetic Waves in Molecular Crystals

Physical Review B, 1970
The absorption of electromagnetic waves in molecular crystals at low temperature has been studied using the Green's-function method. The spin dependence of the excitations created by photon absorption has been explicitly considered. In the Hartree-Fock (HF) approximation and in the absence of the radiation field, the poles of the exciton Green's ...
openaire   +1 more source

Absorption of spin from an electromagnetic wave

Optik, 2018
Abstract We demonstrate the transfer of momentum, energy, and spin from a plane circularly polarized electromagnetic wave into an absorber. Lorentz transformations are used for the flux densities because a moving absorber is considered. The given calculations show that spin is the same natural property of a plane electromagnetic wave, as energy and ...
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Differential Forms, Metrics, and the Reflectionless Absorption of Electromagnetic Waves

Journal of Electromagnetic Waves and Applications, 1999
Summary: Two classes of formulations are prevalent on the perfectly matched layer (PML) concept for the reflectionless absorption of electromagnetic waves. In the first, additional degrees of freedom modify the curl and div operators of Maxwell's equations. This results in the so-called non-Maxwellian PML.
Teixeira, FL, Chew, WC
openaire   +3 more sources

PVDF-Graphene Nanocomposite Coatings for Electromagnetic Wave Absorption

2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI), 2019
The feasibility of Polyvinylidene fluoride (PVDF)-graphene nanocomposite coatings for radar absorption is investigated. To this purpose, a production process of PVDF coatings filled with graphene nanoplatelets has been developed. All the produced samples were characterized in terms of morphological, electrical and electromagnetic properties.
D'Aloia A. G., Hossein Cheraghi Bidsorkhi., Tamburrano A., De Bellis G., Sarto M. S.   +4 more
openaire   +2 more sources

Absorption of an electromagnetic wave in a dense plasma

Radio Science, 1976
It is demonstrated that the local absorption of an electromagnetic wave incident normally on a plasma can be obtained accurately by the geometrical optics approximation even in a region including the critical density provided that the electron density variation is moderate.
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Absorption of electromagnetic waves in the plasma resonance region in an electromagnetic trap

Plasma Physics, 1982
The authors consider the absorption of electromagnetic waves incident on the plasma surface in an electromagnetic trap. The electromagnetic waves are transformed in the plasma resonance region in the transition layer between the plasma and the magnetic field into Langmuir oscillations travelling in this layer towards decreasing densities.
V E D'yakov, A Ya Omelchenko, V I Panchenko, K N Stepanov   +3 more
openaire   +1 more source