Results 141 to 150 of about 171,662 (340)

Quantum‐Grade Nanodiamonds from a Single‐Step, Industrial‐Scale Pressure and Temperature Process

Advanced Functional Materials, EarlyView.
Novel method for creation of nitrogen‐vacancy centers in 50‐nm nanodiamonds based on high‐temperature plastic deformation is demonstrated. Compared to the electron irradiation approach, it yields nitrogen‐vacancy centers with significantly improved charge stability, T1 relaxation time, and optical Rabi contrast.
Yahua Bao, Michal Gulka, Parkarsh Kumar, Jakub Copak, Priyadharshini Balasubramanian, Yuliya Mindarava, Rémi Blinder, Michael Olney‐Fraser, Haotian Wen, Hana Spanielova, Helen Zhi Jie Zeng, Benjamin Whitefield, Igor Aharonovich, Jaroslav Hruby, Fedor Jelezko, J. Daniel Belnap, Shery L. Y. Chang, Petr Cigler   +17 more
wiley   +1 more source

Advanced control strategies for multilevel inverter in grid-connected and off-grid photovoltaic systems: A multi-objective approach using LS-PWM for THD reduction

Scientific African
We propose, in this paper, an advanced control strategies to enhance the efficiency and stability of grid-connected and off-grid photovoltaic (PV) systems.
Fatima Chakir, Abdelmounime El Magri, Mohamed Kissaoui, Rachid Lajouad, Abderrahim El Fadili, Mostafa Chakir   +5 more
doaj   +1 more source

Shape‐Morphing Nanoengineered Hydrogel Ribbons as Hemostats

Advanced Functional Materials, EarlyView.
This study introduces a self‐assembling, shape‐morphing nanoengineered hydrogel ribbon system that rapidly forms porous aggregates in situ for efficient hemostasis in trauma and surgical applications. Abstract Rapid and effective hemorrhage control remains a major challenge in trauma and surgical care, particularly for complex or noncompressible wounds.
Ryan Davis Jr, Saptarshi Biswas, Jacob Aragon, Asaf Dana, Jasmine Sureka, Vaaridhi Ramanuja, Jeevika Thazhaiselvam, Sarah E. Miller, Taylor H. Ware, Akhilesh K. Gaharwar   +9 more
wiley   +1 more source

Introducing Pure Calcium Orthophosphate Gels and Aerogels

Advanced Functional Materials, EarlyView.
The synthesis of calcium phosphate‐based gels and aerogels is reported, which exhibit highly porous structures built up of networks of nanoparticles. In case of amorphous aerogels, this leads to yet unmatched specific BET surface areas, making these materials especially interesting for biomedical applications.
Oliver Jeske, Dominik Zanker, Nina Ehlert, Bing‐Qiang Lu, Denis Gebauer   +4 more
wiley   +1 more source

Comparative Evaluation of Transient Stability in MMCs: Grid-Forming vs. Grid-Following Strategies

Energies
This paper explores how different control strategies—grid-forming and grid-following—impact the transient stability of modular multilevel converters (MMCs) interfacing with AC power grids.
Wenjia Zhang, Zhuyi Peng, Wanchun Qi, Sixuan Xu, Hui Cai, Wentao Sun   +5 more
doaj   +1 more source

A Biologically‐Architected Wear and Damage‐Resistant Nanoparticle Coating From the Radular Teeth of Cryptochiton stelleri

Advanced Functional Materials, EarlyView.
The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang, Yu Chen, Ezra Sarmiento, Taige Hao, Atsushi Arakaki, Michiko Nemoto, Pablo Zavattieri, David Kisailus   +7 more
wiley   +1 more source

A Model Predictive Control With Grid-Forming Capability for Back-to-Back Converters in Wind Turbine Systems

IEEE Open Journal of Power Electronics
With the increasing penetration of wind turbine (WT) systems with permanent magnet synchronous generators (PMSGs) into the power grids, the back-to-back converter (BTB) has become the key element interfacing wind sources and power grids.
Zhijie Zeng, Dawei Chen, Shiyao Qin, Shuai Yuan, Zhixiang Zou, Jinyu Chen, Chen Qi   +6 more
doaj   +1 more source

Enhanced fault diagnosis of DFIG converter systems [PDF]

, 2019
Aboushady, Ahmed A., Farrag, Mohamed Emad, Ibem, Chukwuemeka N.   +2 more
core   +1 more source

Autonomous Frequency Regulation of a Grid-Following Converter Powered by Battery Energy Storage System

IFAC-PapersOnLine, 2022
Changwoo Yoon, Young-Ill Lee, Y. Kang
semanticscholar   +1 more source

Intermixing‐Driven Growth of Highly Oriented Indium Phosphide on Black Phosphorus

Advanced Functional Materials, EarlyView.
This study demonstrates controlled intermixing and compound formation at the In/black phosphorus (BP) interface, leading to highly oriented InP formation. Comprehensive structural and electrical analyses reveal tunable bandgap behavior governed by competing BP thinning and charge‐transfer effects, underscoring the critical role of interfacial compound ...
Tae Keun Yun, Min Gyeong Shin, Uje Choi, Jieun Yeon, Jae Joon Kim, Yangjin Lee, Kwanpyo Kim   +6 more
wiley   +1 more source