Results 61 to 70 of about 84,633 (217)

Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh, Bharti Garg, Maximilian Black, Masoud Taleb, Nahid Talebi   +4 more
wiley   +1 more source

Managing Charge Transport and Exciton Generation for Highly Efficient, Bright, and Stable Near‐Infrared Organic Radical Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
High‐performing near‐infrared (NIR) organic light‐emitting diodes are demonstrated using an efficient and stable 800 nm‐emissive organic radical and a thermally activated delayed fluorescence (TADF) host. TADF‐assisted exciton generation combined with improved charge transport enables high external quantum efficiency (>8%), high radiance (>70,000 mW sr−
Hwan‐Hee Cho, Min‐Hsuan Chang, Yi‐Syun Chen, Tetsuro Kusamoto, Emrys W. Evans, Yuh‐Renn Wu, Richard H. Friend   +6 more
wiley   +1 more source

Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structure

Zhejiang dianli
Large-capacity medium-frequency transformers （MFTs） offer advantages such as compact size， light weight， and high power density， but they also face significant challenges related to magnetic and thermal performance.
TIAN Fengqi, DU Zhenbin, WANG Jianmin, SHI Jian   +3 more
doaj   +1 more source

Critical Coupling in Semi‐Trasparent Fano Resonators for Photothermal Converters

Advanced Functional Materials, EarlyView.
An ultrathin metal–insulator multilayer architecture is engineered to exploit Fano‐resonant critical coupling, completely suppressing optical reflectance while achieving a balanced 50:50 trade‐off between absorbance and transmittance. Upon laser excitation at resonance, the metamaterial generates intense localized heat (ΔT≈550∘C$\Delta T {\approx }550^\
Giuseppe Emanuele Lio, Giuseppe Nicoletta, Roberto Caputo, Antonio Ferraro   +3 more
wiley   +1 more source

Bending fatigue life prediction of honeycomb sandwich structures

Hangkong gongcheng jinzhan
Composite sandwich panels possess the characterizations of lightweight and high load-bearing capacity. They also face diverse failure modes，and an in-depth study of their mechanical performance and failure mechanisms is essential to ensure structural ...
DONG Fan, MA Weijie, JI Haoran, LI Yazhi, ZHOU Chunping   +4 more
doaj   +1 more source

Investigation of the Magnetic Circuit and Performance of Less-Rare-Earth Interior Permanent-Magnet Synchronous Machines Used for Electric Vehicles

Energies, 2017
The less-rare-earth interior permanent-magnet synchronous machines (LRE-IPMSMs), which have the advantages of high power density, high efficiency, and low cost, are promising candidates for electric vehicles (EVs).
Ping Zheng, Weinan Wang, Mingqiao Wang, Yong Liu, Zhenxing Fu   +4 more
doaj   +1 more source

Proximity‐Tuned Magnetic and Transport Anomalies in All‐Epitaxial Fe5−xGeTe2/WSe2 Van der Waals Heterostructures

Advanced Functional Materials, EarlyView.
All‐epitaxial and scalable ferromagnetic/non‐magnetic Fe5−xGeTe2/WSe2 van der Waals (vdW) heterostructures exhibiting room‐temperature magnetism and perpendicular magnetic anisotropy (PMA) are realized. The system displays proximity‐tuned magnetic anisotropy, thickness‐dependent unconventional Hall effects, and temperature‐dependent sign reversal of ...
Hua Lv, Tauqir Shinwari, Kacho Imtiyaz Ali Khan, Jens Herfort, Chen Chen, Joan M. Redwing, Mehak Loyal, Gerhard Jakob, Mathias Kläui, Achim Trampert, Bernat Mundet, Belén Ballesteros, Manfred Ramsteiner, Roman Engel‐Herbert, Michael Hanke, João Marcelo J. Lopes   +15 more
wiley   +1 more source

Limits to the Hall Effect and Other Nonreciprocal Effects in Three‐Dimensional Metamaterials

Advanced Materials, EarlyView.
Comprehensive and fundamental bounds on nonreciprocal effects in three‐dimensional metamaterials are derived. They reveal that the effective Hall mobility cannot exceed the largest constituent mobility, that, under certain conditions, the Verdet constant cannot be enhanced, and that, for constituents with Hall coefficients of the same sign, the largest
Christian Kern, Graeme W. Milton
wiley   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Effect of variable-rate non-isothermal aging on microstructure, mechanical properties, and corrosion behavior of Al–Zn–Mg alloy

Journal of Materials Research and Technology
A comprehensive study was conducted to evaluate the effects of non-isothermal aging (NIA) processes with varying rates on the microstructure, mechanical properties, and corrosion resistance of an Al-7.6Zn-2.4Mg-0.2Cu-0.2Cr-0.5Mn-0.15Zr alloy. Compared to
Donghui Yang, Haitao Zhang, Xu Li, Jingong Qin, Zibin Wu, Cheng Guo, Ke Qin, Hiromi Nagaumi, Ping Wang, Bingjiao Yu, Ziping Li   +10 more
doaj   +1 more source