Results 71 to 80 of about 7,728,945 (321)

Interfacial thermal resistance between porous layers: impact on thermal conductivity of a multilayered porous structure

, 2018
Features of thermal transport in multilayered porous silicon nanostructures are considered. Such nanostructures were fabricated by electrochemical etching of monocrystalline Si substrates by applying periodically changed current density.
Belarouci, Ali, Burbelo, Roman, Dekret, Anastasiya, Isaiev, Mykola, Kuzmich, Andrey, Lishchuk, Pavlo, Lysenko, Vladimir, Pastushenko, Anton   +7 more
core   +1 more source

Tuning quadratic nonlinear photonic crystal fibers for zero group-velocity mismatch [PDF]

, 2005
We consider an index-guiding silica photonic crystal fiber with a triangular air-hole structure and a poled quadratic nonlinearity. By tuning the pitch and the relative hole size, second-harmonic generation with zero group-velocity mismatch is found for ...
Arraf, Ashihara, Faccio, Fejer, Ferrando, Fleming, Hanne Nielsen, Jesper Lægsgaard, Johnson, Kazansky, Kielich, Kodama, Kuhlmey, Lægsgaard, Lægsgaard, Monro, Morten Bache, Myrén, Ole Bang, Yu   +19 more
core   +3 more sources

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Robust virtual‐vector model predictive control of permanent‐magnet motor considering D‐Q axis inductance parameter uncertainty

IET Electric Power Applications
To suppress parameter mismatch and improve the output performance of model predictive control (MPC), a new robust virtual‐vector MPC strategy is proposed for a five‐phase permanent‐magnet motor in this study.
Xingke An, Zhengmeng Liu, Qian Chen, Guohai Liu   +3 more
doaj   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Weight-Adaptable Disturbance Observer for Continuous-Control-Set Model Predictive Control of NPC-3L-Fed PMSMs

Energies
This paper presents a cascaded control strategy for neutral-point-clamped three-level (NPC-3L) inverter-fed permanent magnet synchronous motors (PMSMs), integrating continuous-control-set model-predictive control (CCS-MPC) with mid-point voltage ...
Zhenyan Liang, Jiang Wang, Yitong Wu, Zhen Zhang   +3 more
doaj   +1 more source

Suppression of dynamics and frequency synchronization in coupled slow and fast dynamical systems

, 2016
We present our study on the emergent states of two interacting nonlinear systems with differing dynamical time scales. We find that the inability of the interacting systems to fall in step leads to difference in phase as well as change in amplitude.
Ambika, G., Gupta, Kajari
core   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

Robust Predictive Current Control of IMs With MRAS-Based Parameter Estimation

IEEE Access
Induction motors are extensively employed in numerous industrial and commercial applications due to their robustness, simplicity, and cost-effectiveness.
Gabriel Caramori, Igor Oliani, Angelo S. Lunardi, Alfeu J. Sguarezi Filho   +3 more
doaj   +1 more source

Magnetic spectrum of trigonally warped bilayer graphene - semiclassical analysis, zero modes, and topological winding numbers

, 2013
We investigate the fine structure in the energy spectrum of bilayer graphene in the presence of various stacking defaults, such as a translational or rotational mismatch.
G. E. Volovik, G. Montambaux, I. M. Lifshitz, I. M. Lifshitz, I. M. Lifshitz, I. M. Lifshitz, L. A. Falkovsky, L. A. Falkovsky, L. Onsager, M. O. Goerbig, R. de Gail   +10 more
core   +1 more source