Results 61 to 70 of about 6,455,631 (286)

Development of improved performance electromagnetic valve for liquid rocket engine

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2020
The problem of developing optimal-design electromagnetic valves is relevant for many industries. The development of technology is characterized by increased power and pressures used for actuator mechanisms, as well as by reducing the dimensions and mass ...
A. A. Igolkin   +2 more
doaj   +1 more source

Electromagnetic-field-induced cohesive force enhancement in a metallic nanowire

open access: yes, 2004
We theoretically study the conducting electronic contribution to the cohesive force in a metallic nanowire irradiated under a transversely polarized external electromagnetic field at low temperatures and in the ballistic regime.
Xiao, XB   +4 more
core  

Chemical Strategies for Multistimuli Responsive Dynamic Covalent Materials in Regenerative Medicine

open access: yesAdvanced Healthcare Materials, EarlyView.
Multistimuli responsive dynamic covalent materials integrate reversible chemistry with the complex chemical, mechanical, and biochemical cues of regenerative environments. This review highlights chemical strategies based on orthogonal dynamic bonds, multicomponent networks, and hierarchical architectures to regulate mechanics, degradation, and ...
Saurabh Joshi   +2 more
wiley   +1 more source

Electromagnetic Vibration Simulation of a 250-MW Large Hydropower Generator with Rotor Eccentricity and Rotor Deformation

open access: yesEnergies, 2017
The electromagnetic vibration caused by electromagnetic force on the stator has threatened large hydro generators operating safely and stably. At the Zhexi hydropower station, the hydro generator was beset by electromagnetic vibration for a long time ...
Ruhai Li   +3 more
doaj   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

open access: yesAdvanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis   +19 more
wiley   +1 more source

Why Is the Mechanism Underlying the Chiral‐Induced Selectivity Effect Still Challenging?

open access: yesAdvanced Materials, EarlyView.
The chiral‐induced spin selectivity (CISS) effect is observed in many experimental configurations and for different materials. However, there are theoretical challenges in attempting to explain those results. A qualitative framework for explaining all the results is presented.
Ron Naaman, Yossi Paltiel
wiley   +1 more source

Mechanism of Eddy Current-induced Electromagnetic Force and Vibration Noise of Large-Capacity Transformer Oil Tanks

open access: yesCSEE Journal of Power and Energy Systems
Heavy eddy currents exist in oil tanks during the normal operation of high-voltage and large-capacity transformers. Therefore, considerable vibration and noise are produced. Electromagnetic interference is studied in detail.
Huina Yang   +4 more
doaj   +1 more source

Oscillating Electromagnetic Force Effect on Concentration Distribution near Liquid Solid Interface

open access: yesIOP Conference Series: Materials Science and Engineering, 2018
Mass transfer near the reaction interface is often rate determining step in a high temperature process. Traditional agitation method reduces concentration boundary layer formed near the reaction interface from its outside by increasing the velocity in the bulk region.
Kazuhiko Iwai   +3 more
openaire   +1 more source

Pulsed Laser‐Assisted Phase Engineering of Multimetallic Colloidal Nanocrystals With Complex Compositions

open access: yesAdvanced Materials, EarlyView.
The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela   +4 more
wiley   +1 more source

Optimized calculation approach of levitation force in single-point maglev system for maglev trains

open access: yes机车电传动
Levitation control is one of the key technologies in maglev trains, and an accurate electromagnetic force distribution model is fundamental to the design of electromagnets and levitation controllers.
ZHANG Jiaxin, HAN Yufei, LIU Shuai
doaj  

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