Results 41 to 50 of about 1,849,244 (248)

The mechanical advantage of the magnetosphere: solar-wind-related forces in the magnetosphere-ionosphere-Earth system [PDF]

open access: yesAnnales Geophysicae, 2007
Magnetosphere-ionosphere interactions involve electric currents that circulate between the two regions; the associated Lorentz forces, existing in both regions as matched opposite pairs, are generally viewed as the primary mechanism by which linear ...
V. M. Vasyliūnas
doaj   +1 more source

Spreading behavior of molten solder with alternative currents under the action of electromagnetic ultrasound

open access: yesJournal of Materials Research and Technology, 2022
A novel electromagnetic ultrasonic-assisted spreading with molten Sn−9Zn solder on the surface of SiC ceramics was developed. The distribution and strength of the magnetic induction of an alternating magnetic field, the strength of the static magnetic ...
Mingxuan Zhang   +4 more
doaj   +1 more source

Coupled electromagnetic and mechanical modeling and detection of buried objects

open access: yesApplications in Engineering Science, 2022
A time domain finite element (FE) framework was used to investigate the coupled electromagnetic (EM) and mechanical behavior of buried target systems. The coupling of the EM and mechanical fields is through using the Lorentz Force as the body force in ...
Mohamed Elbadry   +2 more
doaj   +1 more source

Design of a Voice Coil Motor Actuator With L-Shape Coils for Optical Zooming Smartphone Cameras

open access: yesIEEE Access, 2020
This paper proposes a voice coil motor (VCM) with a novel electromagnetic structure for smartphone OZ actuators, and the advantages of this novel design are its long displacement, compact size, and more powerful and stable Lorentz force. These advantages
Chang-Lin Hsieh, Chien-Sheng Liu
doaj   +1 more source

On the Lorentz Invariance of Maxwell's Equations [PDF]

open access: yes, 2003
It is shown that, contrary to existing opinion, Maxwell's equations are not invariant in form under Lorentz ...
Vesselin, Noninski
core  

Optimizing NiMo Electrocatalyst Coatings for Hydrogen Evolution in Alkaline Electrolysis With The Machine Learning‐Guided Autonomous Platform CatBot

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a closed‐loop optimization workflow integrating CatBot, an automated synthesis and testing system, to discover NiMo hydrogen‐evolution catalysts. CatBot synthesised and evaluated 228 unique samples, identifying the best performing catalysts for transfer to nickel‐foam electrodes. The best candidate is highly active, reaching 1 Acm−2${
Paolo Vincenzo Freiesleben de Blasio   +7 more
wiley   +1 more source

Beyond Thin Film Limits—Superhard and Hydrogen‐Free Amorphous Carbon Coatings With Over 100 µm Thickness

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, an extreme‐thick laser‐arc PVD ta‐C (DLC) coating exceeding 100 µm is demonstrated, opening up new possibilities for ultra‐high load bearing capacity. This superhard amorphous carbon architecture combines >50% sp3 bonding, robust adhesion and self‐supporting performance, shielding substrates from plastic flow under extreme contact ...
Martin Zawischa   +3 more
wiley   +1 more source

Lorentz-force approach to the Casimir force [PDF]

open access: yes, 2006
An approach to the problem of the Casimir force on magnetodielectric bodies is outlined, which is based on the calculation of the ground-state Lorentz force acting on the polarization and magnetization charges and currents that constitute the bodies ...
Raabe, Christian, Welsch, Dirk-Gunnar
core   +1 more source

Measuring the Hall Effect in Hysteretic Materials

open access: yesAdvanced Materials, EarlyView.
The authors highlight common pitfalls in measuring the Hall effect: in hysteretic magnets, improper data processing can create signals that look exotic but are not real. This Perspective explains the origin of these artifacts and presents practical measurement strategies that help researchers identify reliable Hall responses in complex magnetic ...
Jaime M. Moya   +6 more
wiley   +1 more source

Norms of certain operators on weighted L-spaces and Lorentz sequence spaces. [PDF]

open access: yes, 2002
The problem addressed is the exact determination of the norms of the classical Hilbert, Copson and averaging operators on weighted spaces and the corresponding Lorentz sequence spaces , with the power weighting sequence or the variant defined by .
Jameson, Graham J. O., Lashkaripour, R.
core   +2 more sources

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