Results 51 to 60 of about 15,243,501 (296)

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

A Stage-Coupled Field–Circuit Simulation Method for GIS Multiple Restrikes Considering Time-Varying Arc Resistance

Energies
Multiple restrikes during gas-insulated switchgear (GIS) disconnector operations generate very fast transient overvoltage and associated electromagnetic disturbance.
Dandan Zhao, Xinyu Li, Shaoyin He, Haoyu Chen   +3 more
doaj   +1 more source

Transient electromagnetic survey for Seafloor Massive Sulfide (SMS) deposit characterization at TAG Hydrothermal Mound, Mid-Atlantic Ridge

, 2022
Transient electromagnetic data is devided into three parts. Observe dbdt.npy is the observed transient electromagnetic data, the data is a vector (400 elements in the vector). this data is used to inversion the conductivity below the seafloor.
Revil, Andre, Shen, Jinsong, Nie, Zuofu, Tao, Chunhui, Liu, Long, Li, Qianyu, Su, Zhaoyang, Zhu, Zhongmin, Zhou, Jianping, Deng, Xianming   +9 more
core   +1 more source

Influence of the Electromagnetic Field Model on the Calculated No‐Load Magnetic Field of Tubular Hydro Generators

IET Electric Power Applications
The selected electromagnetic field model of a hydro generator directly affects the calculation of the no‐load magnetic field, which in turn affects the grid‐connected power quality of the hydrogenerator and the power transmission safety.
Qi‐Rui Yin, Zhi‐Ting Zhou, Zhen‐Nan Fan, Yong Yang, Jing‐Can Li   +4 more
doaj   +1 more source

Mathematic model of the converter with fourteenzone voltage regulation

Adaptivni Sistemi Avtomatičnogo Upravlinnâ, 2022
The article focuses on electromagnetic processes in the electric circuits with semiconductor switches. The mathematical model of the converter with fourteenzone regulation of output voltage has been developed to analyse electromagnetic processes in ...
В. Михайленко, Г. Міхненко, Ю. Чуняк, О. Петрученко , В. Бачинський   +4 more
doaj   +1 more source

Modeling of MMC for Fast and Accurate Simulation of Electromagnetic Transients: A Review [PDF]

Energies, 2017
Over the past decade, modular multilevel converters have evolved as the preferred choice for high voltage conversion systems. The design of the converter poses a computational challenge to the classical electromagnetic transient simulation techniques, for which the existing literature proposes numerous simplified and computationally-efficient ...
Salman Khan, Elisabetta Tedeschi
openaire   +4 more sources

Managing Charge Transport and Exciton Generation for Highly Efficient, Bright, and Stable Near‐Infrared Organic Radical Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
High‐performing near‐infrared (NIR) organic light‐emitting diodes are demonstrated using an efficient and stable 800 nm‐emissive organic radical and a thermally activated delayed fluorescence (TADF) host. TADF‐assisted exciton generation combined with improved charge transport enables high external quantum efficiency (>8%), high radiance (>70,000 mW sr−
Hwan‐Hee Cho, Min‐Hsuan Chang, Yi‐Syun Chen, Tetsuro Kusamoto, Emrys W. Evans, Yuh‐Renn Wu, Richard H. Friend   +6 more
wiley   +1 more source

Analysis of the converter with fourteenzone voltage regulation

Adaptivni Sistemi Avtomatičnogo Upravlinnâ, 2023
The article focuses on electromagnetic processes in the electric circuits with semiconductor switches. The mathematical model of the converter with fourteenzone regulation of output voltage has been developed to analyse electromagnetic processes in ...
V. Mykhailenko, V. Svyatnenko, S. Tsyvinskiy, V. Voytyuk   +3 more
doaj   +1 more source

Neuromorphic Devices for Extreme Environments: State‐Variable Reliability and Stabilization Strategies

Advanced Functional Materials, EarlyView.
Neuromorphic devices for extreme environments are interpreted through the physical states that store and process information. Radiation, temperature extremes, and vacuum can perturb vacancies, filaments, trapped charges, polarization, interfaces, and readout signals.
Taehyun Park, Geon Park, Junhyung Cho, Jaechan Song, Wangmyung Choi, Jaehyun Hur, Nicola Gasparini, Hocheon Yoo   +7 more
wiley   +1 more source

Critical Coupling in Semi‐Trasparent Fano Resonators for Photothermal Converters

Advanced Functional Materials, EarlyView.
An ultrathin metal–insulator multilayer architecture is engineered to exploit Fano‐resonant critical coupling, completely suppressing optical reflectance while achieving a balanced 50:50 trade‐off between absorbance and transmittance. Upon laser excitation at resonance, the metamaterial generates intense localized heat (ΔT≈550∘C$\Delta T {\approx }550^\
Giuseppe Emanuele Lio, Giuseppe Nicoletta, Roberto Caputo, Antonio Ferraro   +3 more
wiley   +1 more source