Results 61 to 70 of about 22,137 (279)

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

High Voltage in Noble Liquids for High Energy Physics

, 2014
A workshop was held at Fermilab November 8-9, 2013 to discuss the challenges of using high voltage in noble liquids. The participants spanned the fields of neutrino, dark matter, and electric dipole moment physics.
A Tomas, B Lundberg, B Rebel, C H Faham, C Hall, E Bernard, F Monrabal, F Resnati, H Wang, J Va'vra, M Messina, M Soderberg, P C Rowson, S P Pereverzev, T M Ito, T Strauss   +15 more
core   +1 more source

Modeling and damping of high-frequency leakage currents in PWM inverter-fed AC motor drive systems [PDF]

, 1995
This paper presents an equivalent circuit for high-frequency leakage currents in pulsewidth modulation (PWM) inverter-fed AC motors, which forms a series resonant circuit.
Akagi, Hirofumi, Ogasawara, Satoshi
core   +1 more source

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

Advanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich, Paul Markus, Matthias Stöter, Bernhard Biersack, Rainer Schobert, Josef Breu, Georg Papastavrou   +6 more
wiley   +1 more source

Design of a High‐Voltage High‐Frequency Insulation Test System Using a Ferrite‐Based Oil‐Insulated Resonant Transformer

High Voltage
As power‐electronic (PE)‐based systems become increasingly common in the electric power grid, the insulation systems used in medium‐ and high‐voltage (HV) applications will be exposed to high‐frequency (HF) electric fields.
Weichuan Zhao, Gijs Willem Lagerweij, Mohamad Ghaffarian Niasar   +2 more
doaj   +1 more source

Micromechanical resonator driven by radiation pressure force [PDF]

, 2017
Radiation pressure exerted by light on any surface is the pressure generated by the momentum of impinging photons. The associated force - fundamentally, a quantum mechanical aspect of light - is usually too small to be useful, except in large-scale ...
Boales, Joseph A., Mateen, Farrukh, Mohanty, Pritiraj   +2 more
core   +2 more sources

Magnetic Control of Chiral Hybridized Phonon Magnetic Moments in Ferrimagnets Fe2‐xZnxMo3O8

Advanced Functional Materials, EarlyView.
Helicity‐resolved magneto‐Raman spectroscopy reveals magnetic control of chiral phonon magnetic moments in polar ferrimagnet (ZnxFe2−xMo3O₈). Large spontaneous zero‐field phonon splittings, selective phonon–magnon coupling, and asymmetric Zeeman responses demonstrate that phonon chirality is governed by magnon‐phonon coupling and magnetization.
Youngsu Choi, Dirk Wulferding, Amit Pawbake, Clément Faugeras, Sivasakthi Kuppusamy, Raman Sankar, Gichan Son, Jeongwoo Kim, Kwang‐Yong Choi   +8 more
wiley   +1 more source

Identification of the resonant-grounded system parameters by evaluating fault measurement records [PDF]

IEEE Transactions on Power Delivery, 2004
The operation of a resonant-grounded network during an earth-fault condition depends on the three basic parameters: damping, detuning, and unbalance factor. These parameters are influenced by the environmental conditions (e.g. humidity, temperature, and pollution), and the network topology.
Zivanovic, R., Schegner, P., Seifert, O., Pilz, G.   +3 more
openaire   +2 more sources

Emergent Spin‐Glass Behavior in an Iron(II)‐Based Metal–Organic Framework Glass

Advanced Functional Materials, EarlyView.
A one‐pot, solvent‐free synthesis yields an Fe2+‐based metal‐organic framework (MOF) glass featuring a continuous random network structure. The material exhibits spin‐glass freezing at 14 K, driven by topological‐disorder and short‐range magnetic frustration, showcasing the potential of MOF glasses as a plattform for cooperative magnetic phenomena in ...
Chinmoy Das, Soma Salamon, Joachim Landers, Jan‐Benedikt Weiß, Wen‐Long Xue, Pascal Kolodzeiski, Roman Pallach, Heiko Wende, Sebastian Henke   +8 more
wiley   +1 more source

Research on current control strategy of overvoltage flexible suppression device based on cascaded linear-nonlinear active disturbance rejection controller

AIP Advances
In order to improve the immunity and speed tracking performance of active inverters in resonant overvoltage flexible suppression under load variation, parameter perturbation, and other uncertainties, a current control strategy of a resonant overvoltage ...
Haichun Niu, Xiaoling Liu, Yu Liu, Fuzhen Qin, Gaiyun Huang   +4 more
doaj   +1 more source