Results 71 to 80 of about 58,031 (307)

Magnetic moments in the Poynting theorem, Maxwell equations, Dirac equation, and QED

open access: yesPhysics Open
This paper examines the theory of electron magnetic dipole moment interactions with magnetic fields or other electrons in classical and quantum electrodynamics. We show that these interactions may be described by a version of the Poynting theorem that is
Peter J. Mohr
doaj   +1 more source

Modelling the magnetic dipole

open access: yes, 2016
International audienceThree different models of a magnetic dipole, viz., a uniformly magnetised sphere, a circular current loop and a pair of fictitious magnetic charges, have been systematically analysed within the formalism based on the vector ...
Seleznyova, Kira   +2 more
core   +1 more source

Hierarchical MXene‐Derived NTP/C Nanohybrids for Cryogenic Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A hierarchical MXene‐derived NaTi2(PO4)3/C nanohybrid enables efficient sodium‐ion storage down to −40°C by integrating fast ion–electron transport pathways with an ether‐based electrolyte. The system promotes dominant pseudocapacitive behavior and forms a robust inorganic‐rich SEI, collectively mitigating kinetic and interfacial limitations, thereby ...
M. Sai Bhargava Reddy   +5 more
wiley   +1 more source

Effective Hamiltonian of Electroweak Penguin for Hadronic b Quark Decays [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2009
In this research we work with the effective Hamiltonian and the quark model. We investigate the decay rates of matter-antimatter of quark. We describe the effective Hamiltonian theory and apply this theory to the calculation of current-current ( ), QCD
H. Mehrban
doaj  

Magnetic dipole moments of the negative parity $$J^{PC}=2^{--}$$ JPC=2-- mesons in QCD

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
Magnetic dipole moments of the negative parity light and heavy tensor mesons are calculated within the light cone QCD sum rules method. The results are compared with the positive parity counterparts of the corresponding tensor mesons.
T. M. Aliev, T. Barakat, M. Savcı
doaj   +1 more source

Active magnetic cloaking with a dipole

open access: yesAIP Advances, 2020
We theoretically propose and experimentally demonstrate an active quasi-static magnetic cloak enabled by a single magnetic dipole. The cloaking effect can be achieved by active cancelation of the background magnetic field using the magnetic dipole ...
Xin Dai, Jincheng Jiang
doaj   +1 more source

Fully Wireless and Flexible Valves for Multiplexed and Prolonged Intravesical Liquid Release

open access: yesAdvanced Healthcare Materials, EarlyView.
A fundamental mechanism for the simultaneous control of multiple magnetic valves is reported in a miniature soft robotic patch for intravesical drug delivery, enabling fully wireless and programmable liquid release. Integrated with a bioadhesive interface and induction‐coupling‐based liquid volume sensing, the soft robotic patch is promising to enable ...
Boyang Xiao   +5 more
wiley   +1 more source

Energy Flow and Radiation Efficiency in Radiative GRMHD Simulations of Neutron Star Ultraluminous X-Ray Sources

open access: yesThe Astrophysical Journal
We investigate numerically the energy flow and radiation efficiency of accreting neutron stars as potential ultraluminous X-ray sources (ULXs). We perform 10 simulations in radiative general relativistic magnetohydrodynamics, exploring six different ...
Fatemeh Kayanikhoo   +3 more
doaj   +1 more source

Magnetic Stability Analysis for the Geodynamo [PDF]

open access: yes, 2004
Kinematic dynamo modelling addresses the growth of magnetic fields under the action of fluid flow, effected in the geophysical case by the action of the convecting electrically conducting outer core and magnetic diffusion. In this study, we prescribe the
Livermore, Philip
core  

Dipole-matter interactions governed by the asymmetry of Maxwell equations

open access: yes, 2023
Directionally molding the near-field and far-field radiation lies at the heart of nanophotonics and is crucial for applications such as on-chip information processing and chiral quantum networks.
Chenxu Bian (14551565)   +9 more
core   +1 more source

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