Results 21 to 30 of about 1,917 (183)

External magnetic field have significant effects on diversity of magnetotactic bacteria in sediments from Yangtze River, Chagan Lake and Zhalong Wetland in China

open access: yesEcotoxicology and Environmental Safety, 2023
Magnetotactic bacteria (MTB) can rapidly relocate to optimal habitats by magnetotaxis, and play an important role in iron biogeochemical cycling. This study aimed to evaluate the contribution of the external magnetostatic field to the diversity of MTB in
Guojing Zhang   +6 more
doaj   +1 more source

On an Electron in a Magnetostatic Field

open access: yes, 2021
It is well known that a voltage is induced in a wire exposed to an alternating magnetic field. The present contribution is guided by the question whether a similar phenomenon can be predicted and observed for a wire in a magnetostatic field. A classical and a semi-classical models describing a valence electron in a metal imply that the electron would ...
openaire   +2 more sources

Effect Of The Focusing Magnetostatic Field Profile On The Diffraction Radiation Oscillator Excitation [PDF]

open access: yesЖурнал нано- та електронної фізики, 2009
Effect of the focusing magnetostatic field (FMF) profile on the output characteristics of diffraction radiation oscillator (DRO) is studied experimentally.
E.M. Khutoryan   +4 more
doaj  

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

open access: yesAdvanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Effects of nanodots shape and lattice constants on the spin wave dynamics of patterned permalloy dots

open access: yesAIP Advances, 2019
Micromagnetic simulations studies on Permalloy (Ni80Fe20) nanodots with different shapes and edge-to-edge separations (s) down to 25nm arranged in square lattice are reported. We observe the significant variation of spin-wave (SW) dynamics of nanodots of
Nikita Porwal   +2 more
doaj   +1 more source

A spectral element method for the solution of magnetostatic fields

open access: yesTURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES, 2017
Recently, we have seen good progress in our capability to simulate complex electromagnetic systems. However, still there exist many challenges that have to be tackled in order to push limits restricting the field of computational electromagnetics upward. One of these challenges is the limitations in the available computational resources.
Ibrahim Mahariq, Atakan Erciyas
openaire   +4 more sources

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

open access: yesAdvanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia   +3 more
wiley   +1 more source

Magnetostatics of magnetic skyrmion crystals

open access: yesNew Journal of Physics, 2018
Magnetic skyrmion crystals are topological magnetic textures arising in the chiral ferromagnetic materials with Dzyaloshinskii–Moriya interaction.
Ren Qin, Yong Wang
doaj   +1 more source

Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix

open access: yesAdvanced Materials, EarlyView.
3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández   +15 more
wiley   +1 more source

A taxonomy of magnetostatic field lines

open access: yesAmerican Journal of Physics
Contrary to widespread belief, magnetostatic field lines do not ordinarily form closed loops. Why, then, are they in fact closed for so many familiar examples? What other topologies are possible, and what current configurations generate them?
Joel Franklin   +2 more
openaire   +2 more sources

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