Results 71 to 80 of about 10,474 (298)
Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene
Advanced Functional Materials, EarlyView.Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus +8 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg +6 more
wiley +1 more source
A Modular AC-DC Power Converter with Zero Voltage Transition for Electric Vehicles
Energies, 2017 A study of the fundamental of operation of a three-phase AC-DC power converter that uses Zero-Voltage Transition (ZVT) together with Space Vector Pulse Width Modulation (SVPWM) is presented. The converter is basically an active rectifier divided into two
Jazmin Ramirez-Hernandez +2 more
doaj +1 more source
Inversor cinco níveis em corrente para o acionamento de motores elétricos [PDF]
, 2013 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2013.Neste trabalho apresenta-se um estudo sobre inversores trifásicos multiníveis em corrente, para o ...
Dupczak, Bruno Scortegagna
core
Advanced Functional Materials, EarlyView.An integrated material platform combining engineered SiNx thin films and printable ZrO2 nanoparticle‐embedded resin enables broadband achromatic metalenses from the ultraviolet to visible range. The demonstrated meta‐optics achieve near‐diffraction‐limited focusing with minimal chromatic aberration.
Hyunjung Kang +3 more
wiley +1 more source
Design and Analysis of Very High-Gain Expandable DC–DC Step-Up Converter
IEEE AccessThis paper presents a new non-isolated expandable high gain topology with two families of switched-diode-inductor-capacitor (2F-SDIC) network named a design and analysis of very high-gain expandable (VHGE) DC-DC step-up converter.
Miteshkumar Bharatbhai Patel +2 more
doaj +1 more source
Thermal Analysis of Power Semiconductor Converters [PDF]
, 2011 Power devices may fail catastrophically if the junction temperature becomes high enough to cause thermal runaway and melting. A much lower functional limit is set by temperature increases that result in changes in device characteristics, such as forward breakover voltage or the recovery time, and failure to meet device specifications.
openaire +1 more source
Advanced Functional Materials, EarlyView.This work presents a dual‐function interface engineering strategy using PEACl to suppress the formation of the non‐perovskite δ‐FAPbI3 phase at the critical SnO2 buried interface. This approach enables the direct crystallization of the photoactive α‐phase, yielding highly efficient and stable rigid (25.6%) and flexible perovskite solar cells with ...
Xiao Wu +7 more
wiley +1 more source
Multiphase Series Parallel LLC resonant converter
, 2010 The project deals with the design of a switch-mode power supply (SMPS) with a medium and high power output. The power supply uses multiphase control switching.
Drda, Václav
core +1 more source
Simulation and Implementation a Non-Isolated Buck Converter at ZCS Condition [PDF]
Journal of Intelligent Procedures in Electrical Technology, 2013 A new soft-switching resonant inverting-buck converter with high efficiency is presented. The proposed converter steps down and inverts the input voltage.
Nahid Hematian, Masoud Jabari
doaj