Results 101 to 110 of about 200,732 (327)

Five-level selective harmonic elimination PWM strategies and multicarrier phase-shifted sinusoidal PWM: A comparison [PDF]

open access: yes, 2005
The multicarrier phase-shifted sinusoidal pulse-width modulation (MPS-SPWM) technique is well-known for its important advantage of offering an increased overall bandwidth as the number of carriers multiplied with their equal frequency directly controls ...
Agelidis, V.G.   +3 more
core   +1 more source

Radiation properties of extreme nulling pulsar J1502-5653

open access: yes, 2012
We report on radiation properties of extreme nulling pulsar J1502-5653, by analyzing the data acquired from the Parkes 64-m telescope at 1374 MHz. The radio emission from this pulsar exhibits sequences of several tens to several hundreds consecutive ...
A. Esamdin   +23 more
core   +1 more source

High Dynamic Range Thin‐Film Resistive Flow Sensors for Monitoring Diverse Biofluids

open access: yesAdvanced Functional Materials, EarlyView.
Thin‐film resistive flow sensors with thermoresistive and piezoresistive mechanisms are developed for biofluid monitoring. Fabricated using biocompatible materials and laser micromachining, the devices achieve sub‐millimeter dimensions and a broad dynamic range.
Latifah Almulla   +2 more
wiley   +1 more source

Scalar Pulse Width Modulation Strategies For Matrix Converters

open access: yesEletrônica de Potência, 2007
This paper describes three different scalar pulse width modulation (PWM) techniques for matrix converters to be compared to two other scalar techniques proposed here.
A. G. H. Accioly   +5 more
doaj   +1 more source

Generation of Multi-Color Attosecond X-Ray Radiation Through Modulation Compression

open access: yes, 2011
In this paper, we propose a scheme to generate tunable multi-color attosecond coherent X-ray radiation for future light source applications. This scheme uses an energy chirped electron beam, a laser modulators, a laser chirper and two bunch compressors ...
Qiang, Ji, Wu, Juhao
core   +1 more source

Domain Nucleation and Growth in an Epitaxially Grown Wurtzite Ferroelectric

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric domain nucleation and growth in epitaxial wurtzite (Al, B, Sc)N films are visualized through in situ transmission electron microscopy. Domains initiate near the bottom electrode and propagate laterally with zigzag walls, while unswitched regions remain near the electrode interfaces.
Sebastian Calderon   +3 more
wiley   +1 more source

Enhanced Switching Performance in Single‐Crystalline PbTiO3 Ferroelectric Memristors for Replicating Synaptic Plasticity

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrated single‐crystalline PbTiO3‐based memristors with atomically sharp interfaces, well‐ordered lattices, and minimal lattice mismatch. The devices exhibited an ON/OFF ratio exceeding 105, high stability, and rich resistance‐state modulation.
Haining Li   +7 more
wiley   +1 more source

Experimental implementation of a linear control technique for a single-phase matrix converter [PDF]

open access: yes, 2016
This paper describes a matrix converter with a three-phase input and single-phase output that can be used as a building block for high-power cascaded converters.
Rivera, Marco   +3 more
core  

Understanding Decoherence of the Boron Vacancy Center in Hexagonal Boron Nitride

open access: yesAdvanced Functional Materials, EarlyView.
State‐of‐the‐art computations unravel the intricate decoherence dynamics of the boron vacancy center in hexagonal boron nitride across magnetic fields from 0 to 3 T. Five distinct regimes emerge, dominated by nuclear spin interactions, revealing optimal coherence times of 1–20 µs in the 180–350 mT range for isotopically pure samples.
András Tárkányi, Viktor Ivády
wiley   +1 more source

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