Results 101 to 110 of about 268,305 (340)

Unification of Electromagnetism and Gravitation in the Framework of General Geometry [PDF]

open access: yesProceedings of the workshop in "Fizika" N 12, 2004, 2005
A new geometry, called General geometry, is constructed. It is proven that its the most simplest special case is geometry underlying Electromagnetism. Another special case is Riemannian geometry. Action for electromagnetic field and Maxwell equations are derived from curvature function of geometry underlying Electromagnetism.
arxiv  

Enhanced Terahertz Spectroscopy of a Monolayer Transition Metal Dichalcogenide

open access: yesAdvanced Functional Materials, EarlyView.
An ad‐hoc engineered metallic surface is employed to perform enhanced terahertz spectroscopy of a monolayer transition metal dichalcogenide (TMD). Thanks to a local absorption boost of 104, this technique allows for the extraction of the phonon resonance features and effective permittivity of the 2D material, paving the way for the rational design of ...
Xin Jin   +11 more
wiley   +1 more source

A influência da Naturphilosophie nas ciências do século XIX: eletromagnetismo e energia

open access: yesHistória, Ciências, Saúde: Manguinhos
Resumo Os fenômenos envolvendo eletromagnetismo e conservação da energia durante o século XIX não se enquadravam no paradigma newtoniano vigente. Havia entre os estudiosos a necessidade de explicar tais fatos considerando-se "algo mais", não expresso até
Ana Paula Bispo Silva   +1 more
doaj   +1 more source

Consistent formalism for the momentum of electromagnetic waves in lossless dispersive metamaterials and the conservation of momentum [PDF]

open access: yesarXiv, 2011
A new formalism for electromagnetic and mechanical momenta in a metamaterial is developed by means of the technique of wave-packet integrals. The medium has huge mass density and can therefore be regarded as almost stationary upon incident electromagnetic waves.
arxiv  

Advances in Radiative Heat Transfer: Bridging Far‐Field Fundamentals and Emerging Near‐Field Innovations

open access: yesAdvanced Functional Materials, EarlyView.
This review synthesizes the evolution of radiative heat transfer, emphasizing the transition from far‐field to near‐field regimes. Traditional frameworks, such as Planck's law, are revisited alongside modern innovations like fluctuational electrodynamics. Applications span nanoscale thermal management, energy harvesting, and thermophotovoltaic systems.
Ambali Alade Odebowale   +6 more
wiley   +1 more source

Modal analysis of the ultrahigh finesse Haroche QED cavity

open access: yesNew Journal of Physics, 2018
In this paper, we study a high-order finite element approach to simulate an ultrahigh finesse Fabry–Pérot superconducting open resonator for cavity quantum electrodynamics.
Nicolas Marsic   +4 more
doaj   +1 more source

Electromagnetic Probes [PDF]

open access: yes, 2010
To be published in Landolt-Boernstein Volume 1-23A; 40 pages, 24 figures.
openaire   +2 more sources

Ultra‐Effective Light‐Activated Antibacterial Activity via Carboxyl Functionalized Graphene Quantum Dots and Films

open access: yesAdvanced Functional Materials, EarlyView.
Carboxyl‐functionalized graphene quantum dots (cGQDs) exhibit high singlet oxygen quantum yield due to strong spin–orbit coupling. cGQDs achieve minimum bactericidal concentration of only 0.4 µg mL−1 against S. aureus under low‐intensity illumination.
Muhammad Hassnain   +10 more
wiley   +1 more source

Theory of electromagnetic fields [PDF]

open access: yesarXiv, 2011
We discuss the theory of electromagnetic fields, with an emphasis on aspects relevant to radiofrequency systems in particle accelerators. We begin by reviewing Maxwell's equations and their physical significance. We show that in free space, there are solutions to Maxwell's equations representing the propagation of electromagnetic fields as waves.
arxiv  

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