Results 61 to 70 of about 184,587 (296)

The origin of the negative torque density in disk-satellite interaction

open access: yes, 2011
Tidal interaction between a gaseous disk and a massive orbiting perturber is known to result in angular momentum exchange between them. Understanding astrophysical manifestations of this coupling such as gap opening by planets in protoplanetary disks or ...
Abramowitz   +21 more
core   +1 more source

Ideal Radial Permanent Magnet Coupling Torque Density Analysis

open access: yesIEEE Transactions on Magnetics, 2017
This paper derives the closed form 3-D analytical torque equations for an ideal radial Halbach rotor magnetic coupling. The performance of the radial Halbach coupling is then compared with an ideal axial Halbach rotor coupling. The closed form equations and comparison gives insight into the upper torque density limits of Nd-Fe-B based magnetic devices.
Kang Li   +2 more
openaire   +3 more sources

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

Comparative Thermal and Demagnetization Analysis of the PM Machines with Neodymium and Ferrite Magnets

open access: yesEnergies, 2022
This paper provides computer analysis and experiential investigation of the permanent magnet machines with neodymium and ferrite permanent magnets to discuss the feasibility of utilizing induction machines-oriented equipment for PM machine production ...
Oleksandr Dobzhanskyi   +4 more
doaj   +1 more source

Description of spin transport and precession in spin-orbit coupling systems and a general equation of continuity

open access: yes, 2007
By generalizing the usual current density to a matrix with respect to spin variables, a general equation of continuity satisfied by the density matrix and current density matrix has been derived.
Chengshi Liu   +9 more
core   +1 more source

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires

open access: yesAdvanced Functional Materials, EarlyView.
In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton   +11 more
wiley   +1 more source

Design Considerations of Switched Flux Memory Machine with Partitioned Stators

open access: yesEnergies, 2019
This paper presents general design considerations of a partitioned stator switched flux hybrid magnet memory machine (PS-SF-HMMM). The armature windings and permanent magnets (PMs) are placed on two separate stators, respectively, in the PS-SF-HMMM, and ...
Jiaxing Lei   +5 more
doaj   +1 more source

Time-Resolved X-ray Microscopy of Spin-Torque-Induced Magnetic Vortex Gyration

open access: yes, 2008
Time-resolved X-ray microscopy is used to image the influence of alternating high-density currents on the magnetization dynamics of ferromagnetic vortices. Spin-torque induced vortex gyration is observed in micrometer-sized permalloy squares.
Bocklage, Lars   +12 more
core   +1 more source

Relative Contribution of Trabecular and Cortical Bone to Primary Implant Stability: An In vitro Model Study

open access: yesJournal of Pharmacy and Bioallied Sciences
Background: Primary implant stability is a crucial factor for the successful osseointegration and long-term success of dental implants. The contribution of trabecular and cortical bone to primary implant stability is not well understood.
Trinanjali Bera   +7 more
doaj   +1 more source

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