Results 1 to 10 of about 93,858 (124)

Critical behavior of isotropic systems with strong dipole-dipole interaction: three-loop study [PDF]

open access: yesNuclear Physics B, 2022
We analyze the critical behavior of isotropic systems with dipole-dipole interaction by renormalization-group methods in fixed space-time dimensions. Working in three-dimensional theory we analytically find three-loop expressions for critical exponents in the limit of dominating dipole-dipole forces.
A. Kudlis, A. Pikelner
arxiv   +3 more sources

MATHEMATICAL APPARATUS FOR MODELING OF THE PROPAGATION THE MAGNETIC FIELD ELECTRIC MACHINES WITH A GIVEN ACCURACY

open access: yesСучасні інформаційні системи, 2022
. The problem of modeling the propagation local magnetic fields and spatially dispersed sources is large errors compared to field measurements. An important aspect of adequate modeling is the use of the correct mathematical apparatus.
Larysa Levchenko   +2 more
doaj   +1 more source

Compact, Broadband, and Omnidirectional Antenna Array for Millimeter-Wave Communication Systems

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021
In this paper, a millimeter-wave printed quadrupole antenna is proposed. It consists of two symmetric printed dipoles that make the quadrupole radiating power omnidirectionally.
Yuanzhi Liu, Mustapha C. E. Yagoub
doaj   +1 more source

Reflectarray Design Using a Discrete Dipole Framework

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
We propose and numerically validate a patch reflectarray modeling approach suitable for small patches that describes each patch as a pair of polarizable magnetic dipoles.
Aaron V. Diebold   +3 more
doaj   +1 more source

Effect of Bandage Materials on Epidermal Antenna

open access: yesEngineering Proceedings, 2023
This study explores the effect of different types of bandages on the performance of an epidermal antenna. Three identical dipole antennas are designed on three different types of bandages, and the measured reflection coefficients, S11, show that the ...
Irfan Ullah   +3 more
doaj   +1 more source

Charge-dipole and dipole-dipole interactions in two-dimensional materials [PDF]

open access: yesPhysical Review RESEARCH 4, 013154 (2022), 2022
We derive the explicit analytical form for the charge-dipole and dipole-dipole interactions in 2D configuration space. We demonstrate that the reduction of dimensionality can alter the charge-dipole and dipole-dipole interactions in 2D case. The asymptotics of these interactions at large distances coincide to the charge-dipole and dipole-dipole ...
arxiv   +1 more source

The Improvement and Application of the Geoelectrochemical Exploration Method

open access: yesApplied Sciences, 2023
The anionic and cationic species of elements from deeply buried deposits migrate to the near surface driven by various geological forces. The geoelectrochemical exploration method (GEM), derived from CHIM, consists of the application of an electric field
Ming Kang   +4 more
doaj   +1 more source

Improving the Directionality of Low-Frequency Acoustic Radiation by a Finite Array of Quadrupolar Sources with Acoustic Metamaterials

open access: yesCrystals, 2023
Manipulating radiation patterns is challenging, especially at low frequencies. In this paper, we demonstrate that acoustic metamaterials arranged as an array of quadrupoles remarkably improve the directionality of acoustic radiation at low frequencies ...
Qinglei Zeng   +3 more
doaj   +1 more source

A Wideband Circularly Polarized Magnetoelectric Dipole Antenna for 5G Millimeter-Wave Communications

open access: yesSensors, 2022
In this paper, a wideband circularly polarized (CP) magnetoelectric (ME) dipole antenna operating at 28 GHz band was proposed for 5G millimeter-wave (mm-wave) communications.
Hussain Askari   +4 more
doaj   +1 more source

Spontaneous Polarization Calculations in Wurtzite II-Oxides, III-Nitrides, and SiC Polytypes through Net Dipole Moments and the Effects of Nanoscale Layering

open access: yesNanomaterials, 2021
Herein, the spontaneous polarization in crystals with hexagonal symmetry are calculated as a function of the number of monolayers composing a nanostructure by adding the dipole moments for consecutive units of the nanostructure.
William Troy   +2 more
doaj   +1 more source

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