Simulation of the interaction of electromagnetic waves with dispersed particles in the propagation of breather in the surface layer of a liquid medium

2015 ◽  
Author(s):  
V.V. Zabolotin ◽  
L.A. Uvarova
Keyword(s):  
Surface Layer ◽  
Liquid Medium ◽  
Electromagnetic Waves ◽  
Dispersed Particles

scholarly journals Simulation of electromagnetic waves interaction with dispersed particles on the surface layer of the liquid medium.

2015 ◽  
Vol 2015 (3) ◽  
pp. 131-134
Author(s):  
Людмила Уварова ◽  
Lyudmila Uvarova ◽  
Владимир Заболотин ◽  
Vladimir Zabolotin ◽  
Никита Батраков ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Surface Layer ◽  
Electromagnetic Waves ◽  
Acoustic Pressure ◽  
Laser Light ◽  
Acoustic Signals ◽  
Dispersed Particles ◽  
Different Temperatures ◽  
Waves Interaction ◽  
Ampli Tude

Numerical simulation of the interaction of laser light with dispersed particles at different temper-atures of the surface layer of the oceans and seas. We were obtained shape and amplitude of the acoustic signal formed during this interaction and assess the pressure amplitudes of the acoustic signals at different temperatures of the surface layer of the liquid. The evaluation of the ampli-tude of the acoustic pressure has built its dependence on the surface temperature of the liquid.

scholarly journals Gravitational waves propagation in nondynamical Chern–Simons gravity

2017 ◽  
Vol 26 (13) ◽  
pp. 1750148
Author(s):  
A. Martín-Ruiz ◽  
L. F. Urrutia
Keyword(s):  
Surface Layer ◽  
Domain Wall ◽  
Gravitational Waves ◽  
Electromagnetic Waves ◽  
Condensed Matter ◽  
Additional Contribution ◽  
Reflection And Transmission ◽  
First Derivative ◽  
Waves Propagation ◽  
Chern Simons

We investigate the propagation of gravitational waves in linearized Chern–Simons (CS) modified gravity by considering two nondynamical models for the coupling field [Formula: see text]: (i) a domain wall and (ii) a surface layer of [Formula: see text], motivated by their relevance in condensed matter physics. We demonstrate that the metric and its first derivative become discontinuous for a domain wall of [Formula: see text], and we determine the boundary conditions by realizing that the additional contribution to the wave equation corresponds to one of the self-adjoint extensions of the D'Alembert operator. Nevertheless, such discontinuous metric satisfies the area matching conditions introduced by Barrett. On the other hand, the propagation through a surface layer of [Formula: see text] behaves similarly to the propagation of electromagnetic waves in CS extended electrodynamics. In both cases, we calculate the corresponding reflection and transmission amplitudes. As a consequence of the distributional character of the additional terms in the equations that describe wave propagation, the results obtained for the domain wall are not reproduced when the thickness of the surface layer goes to zero, as one could naively expect.

scholarly journals Mathematical modeling of the electromagnetic fields interaction with small dispersed particles of different geometry and its dynamics.

2014 ◽  
Vol 2014 (3) ◽  
pp. 127-130
Author(s):  
Олег Калуцков ◽  
Oleg Kalutskov ◽  
Людмила Уварова ◽  
Lyudmila Uvarova
Keyword(s):  
Mathematical Modeling ◽  
Molecular Dynamics ◽  
Dielectric Permittivity ◽  
Electromagnetic Waves ◽  
Water Clusters ◽  
Small Particles ◽  
Dispersed Particles ◽  
Electric And Magnetic Fields ◽  
Molecular Dynamics Methods ◽  
Waves Interaction

The model of the electromagnetic waves interaction with small particles and clusters is proposed in the case when the dielectric permittivity of the material depends both on the electric and magnetic fields. We consider the class of the differential equations solutions that is obtained in the framework of the model and allows take into account the geometric structure of the small dispersed particles or clusters. The motion and precipitation of water clusters in narrow tubes is investigated by molecular dynamics methods.

THE MAGNETIC FIELD AT THE SURFACE OF A STRATIFIED FLAT CONDUCTOR IN THE FIELD OF PLANE WAVES WITH APPLICATION TO GEOPHYSICS

1962 ◽  
Vol 40 (11) ◽  
pp. 1583-1592 ◽  
Author(s):  
H. W. Dosso
Keyword(s):  
Magnetic Field ◽  
Surface Layer ◽  
Electromagnetic Waves ◽  
Plane Waves ◽  
Geomagnetic Variations ◽  
Wide Range ◽  
The Magnetic Field

The problem of plane electromagnetic waves incident on a stratified flat conductor is considered. Expressions for the amplitude and phase of the components of the resultant magnetic field at the surface of the conductor are obtained and evaluated for a wide range of frequencies, conductivities, surface layer depths, and angles of incidence. The frequencies f = 10−3 to 103 cycles/sec and the conductivities σ = 10−11 to 10−16 emu considered are of interest in studying geomagnetic variations.

Preparation and study of electromagnetic properties of graphene/graphite/bismuth oxide three-layer coated textile materials

2021 ◽  
pp. 004051752199450
Author(s):  
Yuanjun Liu ◽  
Yi Wang ◽  
Xiang Wu ◽  
Xiaoming Zhao
Keyword(s):  
Surface Layer ◽  
Reflection Loss ◽  
Bismuth Oxide ◽  
Electromagnetic Waves ◽  
Middle Layer ◽  
Bottom Layer ◽  
Electromagnetic Properties ◽  
Textile Materials ◽  
Polyurethane Resin ◽  
Shielding Properties

Three-layer coated composites with good electromagnetic properties were prepared on a plain polyester–cotton blended fabric with PU2540 polyurethane resin as a matrix; graphene, graphite and bismuth oxide were used as coating functional particles; and the influences of types of surface-layer functional particles, middle-layer functional particles and bottom-layer functional particles on electromagnetic properties of three-layer composites were explored. Results showed that when graphite, graphene and graphene were respectively used as bottom-layer, middle-layer and surface-layer functional particles, within the range of 1–1000 MHz, the polarization, dissipation and absorption-attenuation ability of the coated composite to electromagnetic waves was the strongest, and within the range of 10–3000 MHz, the wave-absorbing properties and shielding properties to electromagnetic waves of the coated composite were the strongest. When the frequency was 1600.7 MHz, the value of the reflection loss of the sample was the minimum, which reached –7.15 dB.

Preparation of layer-reinforced nanocomposite based on polytetrafl uoroethylene by laser ablation and ion-plasma modifi cation

2020 ◽  
pp. 531-538
Author(s):  
Yu.K. Mashkov ◽  
K.N. Poleshchenko ◽  
E.N. Eremin ◽  
A.A. Teploukhov ◽  
S.N. Nesov ◽  
...  
Keyword(s):  
Surface Layer ◽  
Laser Ablation ◽  
Polymer Matrix ◽  
Zirconium Dioxide ◽  
Chemical Activity ◽  
Matrix Elements ◽  
Dispersed Particles ◽  
Reinforced Composite ◽  
Ion Plasma ◽  
High Degree

The results of researches devoted to solving the problem of obtaining of layered-reinforced nanocomposite based on polytetrafluoroethylene are presented. To ensure the required adhesive strength between the polymer base and the metal coating based on molybdenum, the surface layer of the base is reinforced with dispersed particles of zirconium dioxide. It is found that when reinforced with zirconium dioxide, the structure of polytetrafluoroethylene becomes more dense, and the ratio of atomic concentrations of fluorine and carbon in its composition decreases, which indicates decrease in the number of saturated fluorocarbon bonds in the polymer and leads to higher chemical activity of polytetrafluoroethylene. The obtained data on change in the chemical state of the layered-reinforced composite components indicate high degree of interaction between the polymer matrix elements, reinforcing components and coating elements in the area of the intermediate mesolayer.

Seti Space Missions

1997 ◽  
Vol 161 ◽  
pp. 761-776 ◽  
Author(s):  
Claudio Maccone
Keyword(s):  
Electromagnetic Waves ◽  
Space Missions ◽  
Gravitational Lens ◽  
The Sun ◽  
Space Antenna ◽  
Focal Distance ◽  
Large Space ◽  
The Earth ◽  
Space Antennas ◽  
New Space

AbstractSETI from space is currently envisaged in three ways: i) by large space antennas orbiting the Earth that could be used for both VLBI and SETI (VSOP and RadioAstron missions), ii) by a radiotelescope inside the Saha far side Moon crater and an Earth-link antenna on the Mare Smythii near side plain. Such SETIMOON mission would require no astronaut work since a Tether, deployed in Moon orbit until the two antennas landed softly, would also be the cable connecting them. Alternatively, a data relay satellite orbiting the Earth-Moon Lagrangian pointL2would avoid the Earthlink antenna, iii) by a large space antenna put at the foci of the Sun gravitational lens: 1) for electromagnetic waves, the minimal focal distance is 550 Astronomical Units (AU) or 14 times beyond Pluto. One could use the huge radio magnifications of sources aligned to the Sun and spacecraft; 2) for gravitational waves and neutrinos, the focus lies between 22.45 and 29.59 AU (Uranus and Neptune orbits), with a flight time of less than 30 years. Two new space missions, of SETI interest if ET’s use neutrinos for communications, are proposed.

The oxidation of Inconel alloy MA754 at low oxidation potential

1983 ◽  
Vol 41 ◽  
pp. 218-219
Author(s):  
D. N. Braski ◽  
P. D. Goodell ◽  
J. V. Cathcart ◽  
R. H. Kane
Keyword(s):  
Surface Layer ◽  
Oxidation Potential ◽  
Metal Interface ◽  
Elevated Temperature Strength ◽  
Surface Conditions ◽  
Inconel Alloy ◽  
Inco Alloy ◽  
Resistance To Oxidation ◽  
Oxide Particles ◽  
Cold Worked

It has been known for some time that the addition of small oxide particles to an 80 Ni—20 Cr alloy not only increases its elevated-temperature strength, but also markedly improves its resistance to oxidation. The mechanism by which the oxide dispersoid enhances the oxidation resistance is being studied collaboratively by ORNL and INCO Alloy Products Company.Initial experiments were performed using INCONEL alloy MA754, which is nominally: 78 Ni, 20 Cr, 0.05 C, 0.3 Al, 0.5 Ti, 1.0 Fe, and 0.6 Y2O3 (wt %).Small disks (3 mm diam × 0.38 mm thick) were cut from MA754 plate stock and prepared with two different surface conditions. The first was prepared by mechanically polishing one side of a disk through 0.5 μm diamond on a syntron polisher while the second used an additional sulfuric acid-methanol electropolishing treatment to remove the cold-worked surface layer. Disks having both surface treatments were oxidized in a radiantly heated furnace for 30 s at 1000°C. Three different environments were investigated: hydrogen with nominal dew points of 0°C, —25°C, and —55°C. The oxide particles and films were examined in TEM by using extraction replicas (carbon) and by backpolishing to the oxide/metal interface. The particles were analyzed by EDS and SAD.

Structural analysis of the surface-layer protein of spirillum serpens by high-resolution electron microscopy

1983 ◽  
Vol 41 ◽  
pp. 738-739
Author(s):  
W. H. Wu ◽  
R. M. Glaeser
Keyword(s):  
Electron Microscopy ◽  
Surface Layer ◽  
Structural Analysis ◽  
High Resolution ◽  
Low Dose ◽  
High Resolution Electron Microscopy ◽  
Optical Diffraction ◽  
Surface Layer Protein ◽  
Morphological Unit ◽  
Resolution Electron

Spirillum serpens possesses a surface layer protein which exhibits a regular hexagonal packing of the morphological subunits. A morphological model of the structure of the protein has been proposed at a resolution of about 25 Å, in which the morphological unit might be described as having the appearance of a flared-out, hollow cylinder with six ÅspokesÅ at the flared end. In order to understand the detailed association of the macromolecules, it is necessary to do a high resolution structural analysis. Large, single layered arrays of the surface layer protein have been obtained for this purpose by means of extensive heating in high CaCl2, a procedure derived from that of Buckmire and Murray. Low dose, low temperature electron microscopy has been applied to the large arrays.As a first step, the samples were negatively stained with neutralized phosphotungstic acid, and the specimens were imaged at 40,000 magnification by use of a high resolution cold stage on a JE0L 100B. Low dose images were recorded with exposures of 7-9 electrons/Å2. The micrographs obtained (Fig. 1) were examined by use of optical diffraction (Fig. 2) to tell what areas were especially well ordered.

Electron-Mirror Microscopic Aspects of Ferroelectric Domains of BaTiO3 And Ca2Sr (C2H5CO2)6

1970 ◽  
Vol 28 ◽  
pp. 478-479
Author(s):  
Teruo Someya ◽  
Jinzo Kobayashi
Keyword(s):  
Surface Layer ◽  
Electric Fields ◽  
Quantitative Study ◽  
Recent Progress ◽  
Ferroelectric Domain ◽  
Resolving Power ◽  
Surface Pattern ◽  
Crystal Surfaces ◽  
One Dimensional ◽  
Ferroelectric Domains

Recent progress in the electron-mirror microscopy (EMM), e.g., an improvement of its resolving power together with an increase of the magnification makes it useful for investigating the ferroelectric domain physics. English has recently observed the domain texture in the surface layer of BaTiO3. The present authors ) have developed a theory by which one can evaluate small one-dimensional electric fields and/or topographic step heights in the crystal surfaces from their EMM pictures. This theory was applied to a quantitative study of the surface pattern of BaTiO3).

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