Results 71 to 80 of about 116,656 (313)
In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts
Advanced Materials, EarlyView.An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea +9 more
wiley +1 more source
Evolution and Modern Approaches for Thermal Analysis of Electrical Machines [PDF]
, 2009 In this paper, the authors present an extended survey on the evolution and the modern approaches in the thermal analysis of electrical machines. The improvements and the new techniques proposed in the last decade are analyzed in depth and compared in ...
Boglietti, Aldo +5 more
core +1 more source
Advanced Materials, EarlyView.We produce a new derivative of hydroxypropyl cellulose functionalized with arylazopyrazole side chains and demonstrate its photoswitchable behaviors in dilute and concentrated aqueous solutions, ultimately designing a series of photochromic cholesteric materials that can be photopatterned as write‐erase displays.
Simona G. Fine +5 more
wiley +1 more source
Diagnostics of DC and Induction Motors Based on the Analysis of Acoustic Signals
Measurement Science Review, 2014 In this paper, a non-invasive method of early fault diagnostics of electric motors was proposed. This method uses acoustic signals generated by electric motors. Essential features were extracted from acoustic signals of motors.
Glowacz A.
doaj +1 more source
Three-dimensional electromagnetic field model of an auger electromechanical converter with an external solid rotor [PDF]
, 2019 Purpose. Creating a three-dimensional mathematical model of the electromagnetic field of an auger electromechanical converter with the external solid rotor, taking into account the geometry peculiarities and the finite length factor.
Brozhko, R +3 more
core +1 more source
Advanced Materials, EarlyView.Device‐level zinc batteries are energy‐limited by the mass/volume of inactive components, while lean‐electrolyte operation triggers interfacial water depletion and unstable kinetics. Here we elucidate lean‐failure mechanisms and develop a COF@PAN functional separator that regulates hydrogen‐bonding networks to manage water activity and accelerate ...
Kun Zhang +12 more
wiley +1 more source
Investigation of the Vibration Effects on an Outer Rotor Brushless Direct Current Motor
IEEE AccessLight electric vehicles used as scooters, electric bikes, tricycles and mini cars are mostly preferred today, especially in urban transportation. Outer rotor Brushless Direct Current Motor (BLDCM) is frequently used in the powertrain of light electric ...
Ali Sinan Cabuk
doaj +1 more source
IEEE Access, 2019 In applications where motor inversion is forbidden, it is important to detect the initial rotor position of the motor. For this reason, based on coupling injection of high-frequency signal, a novel method of initial rotor position detection for brushless
Wei Chen +4 more
doaj +1 more source
Fair weather induced charges and currents on tall wind turbines and experiments with kites [PDF]
, 2016 Earth’s atmospheric potential rapidly increases up to few tens of kilovolts below 200 m altitude. This potential drop will induce charge to tall objects at ground by virtue of electrostatic induction.
Fabró Tàpia, Ferran +4 more
core +1 more source
Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
wiley +1 more source