Results 71 to 80 of about 2,253,922 (294)

Propagation of Electromagnetic Waves in Pulsar Magnetospheres [PDF]

Astrophysics and Space Science, 2001
AbstractWe have developed a numerical code for the propagation of different electromagnetic modes in a pulsar magnetosphere filled by a relativistic, streaming electron-positron plasma in a strong, curved magnetic field. We determine the trajectories, limiting polarization and damping of the waves leaving the magnetosphere.
openaire   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source

Programming an Artificial Neural Network Tool for Spatial Interpolation in GIS - A Case Study for Indoor Radio Wave Propagation of WLAN

Sensors, 2008
Wireless communication networks offer subscribers the possibilities of free mobility and access to information anywhere at any time. Therefore, electromagnetic coverage calculations are important for wireless mobile communication systems, especially in ...
Umut Bulucu, Aktül Kavas, M. Umit Gümüsay, Alper Sen   +3 more
doaj   +1 more source

Inverse Design of Nanoparticulate Materials

Advanced Materials, EarlyView.
Inverse design shifts nanomaterial development from empirical trial‐and‐error to predictive model‐driven strategies. It can rely on knowledge‐based, data‐based, or hybrid process and property functions. This perspective article provides a practical framework for applying inverse design based on instructive examples. It discusses which modeling approach
Nabi Etienne Traoré, Annika Mauch, Michelle Berthold, Lukas Pflug, Wolfgang Peukert, Nicolas Vogel   +5 more
wiley   +1 more source

Electromagnetic wave propagation in a superconducting parallel-plate waveguide filled with an indefinite medium

Results in Physics, 2019
The electromagnetic wave propagation is analysed in a superconducting parallel-plate waveguide filled with an indefinite medium. The dispersion relations of transverse electric and transverse magnetic wave modes are derived by using the Meissner boundary
Burhan Zamir, Rashid Ali, Muzaffar Bashir   +2 more
doaj   +1 more source

Plasmon‐Enhanced Second‐Harmonic Generation in Atomically Thin Crystalline Silver Nanostructures

Advanced Materials, EarlyView.
Atomically thin crystalline silver films combine vertical quantum confinement with lateral plasmonic field enhancement to boost second‐harmonic generation. Nanoribbon and nanotriangle arrays enable geometry‐tunable infrared plasmon resonances, producing strong SHG from deeply subwavelength metallic volumes compatible with silicon‐based nanophotonics ...
Saad Abdullah, Philipp K. Jenke, Andrew P. Weber, Álvaro Rodríguez Echarri, Vahagn Mkhitaryan, Fadil Iyikanat, Frederik Schiller, Philip Walther, J. Enrique Ortega, Lee A. Rozema, F. Javier García de Abajo   +10 more
wiley   +1 more source

Application of a Neural-Network Algorithm Based on Orthogonal Laguerre Polynomials to the Solution of the Cauchy Problem for Differential Equations with a Variable-Order Fractional Derivative on the Example of the Fractional Lane–Emden Equation

Computation
This paper proposes, implements, and tests a neural-network method based on orthogonal Laguerre polynomials for the numerical solution of the Cauchy problem for a singular nonlinear Lane–Emden equation with a variable-order fractional derivative.
Dmitriy Tverdiy, Roman Parovik
doaj   +1 more source

Laws of reflection and refraction of TE and TM polarization waves on the border of rhombic crystals

Қарағанды университетінің хабаршысы. Физика сериясы, 2020
The article analytically solves the problem of reflection and refraction of electromagnetic plane waves of different polarization at the boundary of anisotropic half-spaces of rhombic symmetry.
С.К. Тлеукенов, К.Н. Балабеков, З.К. Жалгасбекова   +2 more
doaj   +1 more source

Electromagnetic wave propagations in conjugate metamaterials

Optics Express, 2017
In this work, by employing field transformation optics, we deduce a special kind of materials called conjugate metamaterials, which can support intriguing electromagnetic wave propagations, such as negative refractions and lasing phenomena. These materials could also serve as substrates for making a subwavelength-resolution lens, and the so-called ...
Yadong, Xu, Yangyang, Fu, Huanyang, Chen
openaire   +2 more sources

Electromagnetic wave propagation in a nonlinear hyperbolic medium

, 2022
The propagation of a quasi-harmonic electromagnetic wave in a bulk hyperbolic dielectric metamaterial is considered. If the group velocities dispersion is not taken into account, then wave propagation can be described either by the hyperbolic nonlinear ...
A. I. Maimistov (14363199)
core   +1 more source