Results 71 to 80 of about 203,397 (298)
Advanced Functional Materials, EarlyView.Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp +7 more
wiley +1 more source
A reverse mode of three-phase asynchronous motors with hexaphase windings
Electrical engineering & Electromechanics, 2014 A reverse operation feasibility in three-phase asynchronous motors with the stator hexaphase windings is proved. In the reverse mode, the hexaphase windings are shown to keep all their declared advantages.
V.D. Lushchyk, S.Yu. Polezin
doaj
Suppression of decoherence in a graphene monolayer ring [PDF]
, 2014 The influence of high magnetic fields on coherent transport is investigated. A monolayer graphene quantum ring is fabricated and the Aharonov-Bohm effect is observed. For increased magnitude of the magnetic field higher harmonics appear.
Haug, Rolf J. +2 more
core +3 more sources
Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures
Advanced Functional Materials, EarlyView.3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina +11 more
wiley +1 more source
Vestnik MGTU, 2017 Nowadays permanent magnet synchronous machines those frequency-controlled from stator side with frequency inverters made on the basis of power transistors or fully controlled thyristors, are widely used as motors and generators.
Hasanova L. H. , Mustafayev R. I.
doaj +1 more source
Raising and Lowering operators of spin-weighted spheroidal harmonics
, 2016 In this paper we generalize the spin-raising and lowering operators of spin-weighted spherical harmonics to linear-in-$\gamma$ spin-weighted spheroidal harmonics where $\gamma$ is an additional parameter present in the second order ordinary differential ...
Shah, Abhay G., Whiting, Bernard F.
core +2 more sources
Advanced Functional Materials, EarlyView.This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger +10 more
wiley +1 more source
Quartz Enhanced Photoacoustic Spectroscopy on Solid Samples
SensorsQuartz-Enhanced Photoacoustic Spectroscopy (QEPAS) is a technique in which the sound wave is detected by a quartz tuning fork (QTF). It enables particularly high specificity with respect to the excitation frequency and is well known for an ...
Judith Falkhofen +3 more
doaj +1 more source
Methodology for Asynchronous Motor Impedance Measurement by Using Higher Order Harmonics
Energies, 2020 The control methods of asynchronous motors have changed during past decades. In the past, asynchronous motors were connected to grid directly. Later, thyristors as switching element-based frequency converters for asynchronous motors have appeared. Today,
Karolis Dambrauskas +4 more
doaj +1 more source
The implementation of sinusoidal PWM on single phase 5-level cascaded H-bridge multilevel inverter [PDF]
, 2013 In the new millennium era of technology, modern industrial devices are mostly based on electronic devices that are very sensitive to harmonics. The needs for a free-harmonics and high rating power source is extremely increased in the past few years ...
Yaakub, Muhamad Faizal
core +1 more source