Results 31 to 40 of about 11,306 (262)

Physics-Informed Neural Modeling of 2D Transient Electromagnetic Fields

Applied Sciences
Electromagnetic wave propagation in complex environments demands accurate yet efficient modeling techniques. This study introduces a physics-informed neural network (PINN) framework for two-dimensional transient electromagnetic analysis, where Helmholtz ...
Sooyoung Oh, Sun K. Hong
doaj   +1 more source

Numerical Analysis of Power System Electromechanical and Electromagnetic Transients based on the Finite Element Technique

Journal of Energy : Energija, 2022
This paper presents a novel technique for numerical analysis of electromagnetic transients and electromechanical oscillations in a power system. The proposed method is based on the finite element method (FEM). The finite element technique so far used for numerical analysis of continuum field problems here has been adopted to analyse electromagnetic and
Jurić-Grčić, I., Kurtović, M., Lucić, R.   +2 more
openaire   +4 more sources

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Non-invasive near-field characterization of Bloch mode dispersion in sinusoidally modulated metasurfaces via transient infrared thermography

Scientific Reports
This study presents a disruptive, non-invasive diagnostic framework for the high-resolution electromagnetic characterization of sinusoidally modulated High Impedance Surfaces (HIS).
Simona Miclaus, Ladislau Matekovits
doaj   +1 more source

Flexible Power Supply System of AC Electric Arc Furnace

Journal of Modern Power Systems and Clean Energy, 2023
The AC electric arc furnace (EAF) is becoming a core apparatus of the modern steel industry. Nevertheless, it used to be a major threat of power quality in the traditional power supply system.
Chongbin Zhao, Qirong Jiang, Dong Liu
doaj   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Enhanced Tantalum Superconducting Resonator Performance via All‐Surface Organic Monolayer Passivation

Advanced Functional Materials, EarlyView.
The internal quality factor of tantalum superconducting resonators is significantly increased by ∼140% in the low photon regime by passivating their surfaces with a high‐quality alkene self‐assembled monolayer. Our methodology promises to enhance the performance of superconducting quantum circuits.
Harsh Gupta, Moritz Singer, Benedikt Schoof, Anna Cattani‐Scholz, Shreya Sharma, Luca Rommeis, Marc Tornow   +6 more
wiley   +1 more source

Advancements in Three-Phase Short-Circuit Fault Computation for Power System Generators: A Comprehensive Review

Revista Facultad de Ingeniería
The Synchronous Machine (SM) representation is crucial for understanding the power system's behavior during transient states, particularly in stability and short circuit studies.
Germán-Antonio Guevara-Velandia, José-Danilo Rairán-Antolines   +1 more
doaj   +1 more source

Charge Generation and Recombination Pathways in All‐Polymer Bulk Heterojunction Solar Cells

Advanced Functional Materials, EarlyView.
Multimodal spectroscopy and device analysis reveal how field‐dependent charge generation, transport limitations, and non‐geminate recombination govern performance losses in all polymer solar cells. The results identify the key processes controlling charge extraction and recombination, providing insights for the design of more efficient all‐polymer ...
Shahidul Alam, Wejdan Althobaiti, Safakath Karuthedath, Christopher E. Petoukhoff, Amr Dahman, Khawla Alkhezaim, Oleksandr Matiash, José P. Jurado, Mariia Ferree, Ning Su, Jacob Blaskovits, Denis Andrienko, Vladimir Dyakonov, Andreas Sperlich, Vojtech Nádaždy, Tobin J. Marks, Antonio Facchetti, Frédéric Laquai   +17 more
wiley   +1 more source

Transient Analysis on Multiphase Transmission Line Above Lossy Ground Combining Vector Fitting Technique in ATP Tool

IEEE Access, 2022
Several approaches to calculate the ground-return impedance and admittance matrices are proposed in the literature. Carson’s approach assumes a lossy ground modeled by frequency-independent conductivity where displacement currents and non ...
Jaimis Sajid Leon Colqui, Anderson Ricardo Justo De Araujo, Taina Fernanda Garbelim Pascoalato, Sergio Kurokawa, Jose Pissolato Filho   +4 more
doaj   +1 more source