Results 31 to 40 of about 24,939 (274)

Extension of the electrodynamics in the presence of the axion and dark photon

open access: yes, 2019
We present the extended electrodynamics in the presence of the axion and dark photon. We derive the extended versions of Maxwell's equations and dark Maxwell's equations (for both massive and massless dark photons) as well as the wave equations.
Huang, Fa Peng, Lee, Hye-Sung
core   +1 more source

Gauss’ law for moving charges from first principles

open access: yesResults in Physics, 2019
A new suggestion for the derivation of Maxwell’s electromagnetic theory is presented, based on relatively few apriori axioms. We can derive Maxwell’s equations by building on the insight that the relationship between an electric dipole and an electric ...
Ofer Eyal, Ayelet Goldstein
doaj   +1 more source

Simulation of the Finite-Difference Time-Domain (FDTD) Method in 2-Dimensional Electromagnetic Wave Propagation in Absorption Media

open access: yesJurnal Fisika Flux, 2022
This research reviewed Maxwell’s equations and Numerical Discretization using the Finite Difference Time Dependent (FDTD) method. First, Maxwell’s equations are introduced in a linear dielectric medium for 1-dimensional and 2-dimensional configurations ...
Muh Fachrul Latief, Idawati Supu
doaj   +1 more source

Electromagnetic energy-momentum in dispersive media [PDF]

open access: yes, 2011
The standard derivations of electromagnetic energy and momentum in media take Maxwell's equations as the starting point. It is well known that for dispersive media this approach does not directly yield exact expressions for the energy and momentum ...
Philbin, T. G.
core   +2 more sources

The physical basis of ionospheric electrodynamics [PDF]

open access: yesAnnales Geophysicae, 2012
The conventional equations of ionospheric electrodynamics, highly succesful in modeling observed phenomena on sufficiently long time scales, can be derived rigorously from the complete plasma and Maxwell's equations, provided that appropriate limits ...
V. M. Vasyliūnas
doaj   +1 more source

Reply to the Comment on Perfect imaging with positive refraction in three dimensions

open access: yes, 2010
Exact time-dependent solutions of Maxwell's equations in Maxwell's fish eye show that perfect imaging is not an artifact of a drain at the image, although a drain is required for subwavelength ...
Thomas G. Philbin   +2 more
core   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie   +4 more
wiley   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney   +2 more
wiley   +1 more source

Efficient method for the solution of Maxwell’s equations for nanostructured materials [PDF]

open access: yesITM Web of Conferences, 2019
The calculation of the electromagnetic field in nanostructured materials and nano-optoelectronic devices, when the wavelength of the incident radiation is comparable with the size of the structural elements, requires the exact solution of Maxwell's ...
Semenikhin Igor
doaj   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

open access: yesAdvanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund   +6 more
wiley   +1 more source

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