Results 11 to 20 of about 2,021,055 (195)

Evolving from Laboratory Toys towards Life-Savers: Small-Scale Magnetic Robotic Systems with Medical Imaging Modalities

open access: yesMicromachines, 2021
Small-scale magnetic robots are remotely actuated and controlled by an externally applied magnetic field. These robots have a characteristic size ranging from several millimetres down to a few nanometres.
Jiachen Zhang
doaj   +1 more source

Electrically controlled magnetism

open access: yesSPIE Proceedings, 2008
Manipulation of magnetically ordered states by electrical means is a promising approach towards novel spintronics devices. We report on the electric control of surface magnetism in Cr2O3 thin films and uniaxial anisotropy in ferroelectric/ferromagnetic heterostructures, respectively.
Binek, Christian   +3 more
openaire   +3 more sources

Magnetic gear dynamics for servo control [PDF]

open access: yes, 2010
This paper considers the analysis and application of magnetic gearbox and magnetic coupling technologies and issues surrounding their use for motion control servo systems.
Atallah, K.   +2 more
core   +1 more source

Optimal Magnetic Attitude Control

open access: yesIFAC Proceedings Volumes, 1999
Magnetic torquing is attractive as means of control for small satellites. The actuation principle is to use the interaction between the earth's magnetic field and a magnetic field generated by a coil set in the satellite. This control principle is inherently time-varying, and difficult to use because control torques can only be generated perpendicular ...
Wisniewski, Rafal, Markley, F.L.
openaire   +3 more sources

Electric-field control of domain wall nucleation and pinning in a metallic ferromagnet [PDF]

open access: yes, 2013
The electric (E) field control of magnetic properties opens the prospects of an alternative to magnetic field or electric current activation to control magnetization. Multilayers with perpendicular magnetic anisotropy (PMA) have proven to be particularly
Auffret, S.   +9 more
core   +4 more sources

MRI-guided robotic arm drives optogenetic fMRI with concurrent Ca2+ recording

open access: yesNature Communications, 2019
Fiber optic implantation in deep areas of the rodent’s brain for MRI combined with optogenetics is challenging. Here the authors use an MRI-guided robotic arm as the navigation method for accurate fiber optic placement and precise microinjection during ...
Yi Chen   +4 more
doaj   +1 more source

Characterization of Tensile Stress-Dependent Directional Magnetic Incremental Permeability in Iron-Cobalt Magnetic Sheet: Towards Internal Stress Estimation through Non-Destructive Testing

open access: yesSensors, 2022
Iron-Cobalt ferromagnetic alloys are promoted for electrical energy conversion in aeronautic applications, but their high magnetostrictive coefficients may result in undesired behaviors.
Borel Toutsop   +4 more
doaj   +1 more source

Robust active magnetic dearing control using stabilizing dynamical compensators [PDF]

open access: yes, 1999
The robust control of active magnetic bearings, based on a linearised interval model, is considered. Through robust stability analysis, all the first-order robust stabilizing dynamical compensators for the interval system are obtained.
Bingham, Chris   +3 more
core   +1 more source

Magnetically Controlled 3D Cartilage Regeneration

open access: yesCARTILAGE, 2023
Objective The cartilage regeneration field has not yet overcome the issue of effective “shaping”: growing regenerated cartilage in the desired shape, and maintaining that shape, is problematic. This study reports on a new method of cartilage regeneration in which the cartilage is shaped in three dimensions. Since cartilage is composed only of cartilage
Xia Chen   +6 more
openaire   +2 more sources

Controlling magnetic coupling in bi-magnetic nanocomposites

open access: yesNanoscale, 2019
Correlation between synthesis technique, resulting in different levels of particle agglomeration at the microscopic scale, and magnetic coupling in nanocomposites.
F. Sayed   +8 more
openaire   +5 more sources

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