Results 51 to 60 of about 452,391 (242)

Closed-Loop Gate Drive for Single-Ended Forward Converter to Reduce Conducted EMI

IEEE Access, 2020
Forward DC/DC converters are widely used in low and medium power circuits that are widely used in the aerospace and navigation fields. Power converters are usually sources of electromagnetic interference (EMI), which is due to their higher voltage and ...
Congwen Xu, Qishuang Ma, Ping Xu, Nan Wang   +3 more
doaj   +1 more source

Electromagnetic Transients on Power Plant Connection Caused by Lightning Event

, 2021
Lightning events can seriously damage the power systems and they represent one of the most dangerous causes of faults in the transmission lines. Usually, when one want to analyze such effects it is necessary to rely on approximate models or to simplify ...
Alice La Fata, La Fata, A, Nicora, M, Elisabetta Fiori, Delfino, F, Martino Nicora, Federico Delfino, Fiori, E   +7 more
core   +1 more source

A Magneto‐Mechanically Activated Nerve Guidance Conduit Promotes Peripheral Nerve Regeneration via TIMP1‐Mediated Membrane Tension Transfer

Advanced Functional Materials, EarlyView.
This study presents a magneto‐mechanical strategy that incorporates FP@MSCs into an aligned PCL/GelMA nerve guidance conduit. Magnetic stimulation increases membrane tension in FP@MSCs, triggering cytoskeletal remodeling, Schwann cell‐like differentiation, and TIMP1 secretion. TIMP1 activates ITGB1/CD63–FAK signaling in NE‐4C cells, increasing membrane
Xinyu Zhu, Yumin Wu, Xiang Gao, Tianlu Wang, Wanting Jia, Xueying Mei, Huanzhong Ji, Zongxi Wu, Yujie Liang, Xiang Li, Kan Li, Jingyuan Li, Guangsen Zheng, Guiqing Liao, Siyong Gao   +14 more
wiley   +1 more source

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

Advanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source

Lightning electromagnetic field coupling to overhead lines: Theory, numerical simulations, and experimental validation

, 2009
—The evaluation of electromagnetic transients in over-head power lines due to nearby lightning return strokes requires accurate models for the calculation of both the incident lightning electromagnetic pulse (LEMP) and the effects of coupling of this ...
Farhad Rachidi, Vladimir A. Rakov, BORGHETTI, ALBERTO, Rachidi, F., Marcos Rubinstein, Rakov, V. A., NUCCI, CARLO ALBERTO, F. Rachidi, M. Uman, Paolone, M., Rubinstein, M., Carlo Alberto Nucci, Martin A. Uman, Uman, M. A., PAOLONE, MARIO, V. A. Rakov, Mario Paolone, Alberto Borghetti, Senior Member, Borghetti, A., Nucci, C. A., M. Rubinstein   +21 more
core   +1 more source

Full‐Field Damage Monitoring in Architected Lattices Using In situ Electrical Impedance Tomography

Advanced Functional Materials, EarlyView.
In situ electrical impedance tomography (EIT) turns 3D‐printed, CNT‐infused architected lattices into full‐field damage‐imaging systems. Tunable Voronoi‐based geometries act as active sensing architectures, enabling conductivity maps to detect early‐stage damage and localise sequential ligament fracture before catastrophic failure.
Akash Deep, Andrea Samore, Alistair McEwan, Andrew McBride, Shanmugam Kumar   +4 more
wiley   +1 more source

Analysis and Optimization of Power MOSFETs Shaped Switching Transients for Reduced EMI Generation

IEEE Access, 2017
The abrupt change in current or voltage caused by the rapid switching action of power semiconductor devices will generate high-frequency electromagnetic interference (EMI) and needs to be located as the primary interference sources in power electronics ...
Tongkai Cui, Qishuang Ma, Ping Xu, Yuchen Wang   +3 more
doaj   +1 more source

Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh, Bharti Garg, Maximilian Black, Masoud Taleb, Nahid Talebi   +4 more
wiley   +1 more source

Reactive Power Injection to Mitigate Frequency Transients Using Grid Connected PV Systems

Energies, 2020
The increasing integration of renewable energies reduces the inertia of power systems and thus adds stiffness to grid dynamics. For this reason, methods to obtain virtual inertia have been proposed to imitate mechanical behavior of rotating generators ...
Yujia Huo, Simone Barcellona, Luigi Piegari, Giambattista Gruosso   +3 more
doaj   +1 more source

Optical Detection of Cellular Signals at Material Interfaces

Advanced Healthcare Materials, EarlyView.
Emerging functional materials are transforming optical detection of cellular signals. This review highlights optical techniques that exploit the unique optical properties of diverse materials to detect and quantify cellular electrical, chemical, and mechanical signals, and discusses key opportunities and challenges.
Xuchen Ren, Jitong Ren, Zixin Zhang, Koney Eungkon Kim, Francis L. Hong, Yuecheng Peter Zhou   +5 more
wiley   +1 more source