Results 121 to 130 of about 6,113,843 (284)

Laser‐Induced Ultrafast Magnetic Phase Transition in 2D Van Der Waals Antiferromagnetic Heterostructures

open access: yesAdvanced Science, EarlyView.
In this work, ultrafast laser‐induced spin transfer and spin relaxation dynamics in 2D van der Waals antiferromagnetic CrI3/CrGeTe3 heterostructures are investigated. Laser excitation is demonstrated to induce pronounced interlayer nonequilibrium spin dynamics and ultrafast magnetic moment reconstruction, driving a transition from an antiferromagnetic (
Yang Wu   +5 more
wiley   +1 more source

Improvement of space vector modulation strategy of two-stage matrix converter

open access: yesGong-kuang zidonghua, 2013
In view of problems that space vector pulse width modulation strategy of two-stage matrix converter has high control complexity and cannot adjust input power factor of the two-stage matrix converter, a scheme of indirect space vector modulation strategy ...
DANG Cun-lu   +2 more
doaj  

Space Vector Pulse Width Modulation Technique Applied to Two Level Voltage Source Inverter [PDF]

open access: yes, 2019
Space vector pulse width modulation SVPWM provides a better technique compared to the other pulse width modulation techniques. This paper presents simulation and implementation of SVPWM signal generation for driving three phase two level voltage source ...
Abdalla, Othman Hassan
core  

A Soft, Flexible Implant for Wireless Photothermal–Pyroelectric Neurostimulation

open access: yesAdvanced Science, EarlyView.
A replication strategy is used to enlarge the exposed surface area of barium titanate within flexible films with embedded carbon nanotubes, enabling efficient photothermal‐pyroelectric stimulation. Polar crystalline nanosheets show superior performance in guiding neural progenitor cells toward neuronal differentiation.
Jiang Wu   +7 more
wiley   +1 more source

Three-phase sinusoidal pulse width modulation algorithms

open access: yes, 2009
The main theme of this bachelors‘s thesis is to introduce readers into the algorithm of generating three-phase sinusoidal pulse width modulation. Main attention is concentrating to methods of generating Pulse width modulation method such as comparate PWM
Rudolf, Ladislav
core   +1 more source

Performance Analysis of Modulation Strategies in Single-Phase HBNPC Inverter Across Variable Operating Conditions

open access: yesIEEE Access
This study investigates the performance of a single-phase 5-level H-Bridge Neutral Point Clamped (HBNPC) inverter across various operating conditions.
Nazlican Cavli, Emre Ozkop
doaj   +1 more source

KAJIAN SISTEM KENDALI SPACE VECTOR PULSE WIDTH MODULATION SEBAGAI PENGENDALI MOTOR INDUKSI 3 FASA [PDF]

open access: yes, 2012
Penelitian ini membahas metode Space Vector Pulse Width Modulation (SVPWM) inverter sebagai pengendali motor induksi yang dimodelkan dengan software Power Simulator.
Agung Nugroho, Emmanuel   +1 more
core  

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

open access: yesAdvanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel   +3 more
wiley   +1 more source

Analisis penggunaan motor induksi satu fasa menggunakan Space Vector Pulse Width Modulation (SVPWM) dengan software Matlab Simulink di Laboratorium Konversi Energi Elektrik ITn Malang [PDF]

open access: yes, 2010
Analisa kinerja motor induksi 1 fasa menggunakan Space Vector Pulse Width Modulation (SVPM) didapatkan dari hasil yang lebih baik dari pada menggunakan autotrafo, dimana arus starting yang di reduksi oleh SVPWM lebih kecil dibandingkan pengasutan arus ...
Filipe, Antonio Fernandes
core   +1 more source

Charting Endocrine Progenitors Across Species and Organs

open access: yesAdvanced Science, EarlyView.
Endocrine progenitors give rise to the hormone‐producing cells of the pancreas and intestine. Using single‐cell multiomics and proteomics, this study compares these progenitors across species, systems, and organs, mapping the conserved and species‐specific gene regulatory networks that guide their formation.
Changying Jing   +21 more
wiley   +1 more source

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