Results 41 to 50 of about 182,868 (300)

Talbot Effect of Non-Coaxial Bessel Beams

open access: yesIEEE Photonics Journal
In recent years, the superposition of nondiffracting beams has been employed to construct Talbot effects with novel propagation properties. Here we discover that non-coaxial Bessel beams can also be used to construct the Talbot effect, which is a more ...
Yizheng Yao   +8 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Electrodeposition of magnetic nanonetworks featuring triangular motifs and parallel ridges on a macroscopic scale

open access: yesNature Communications
Ordered nanostructured magnetic networks offer a versatile platform for studying magnetic frustration, reconfigurable magnonics, and neuromorphic computing. Their fabrication, however, often relies on complicated and expensive nanolithography.
Fei Chen   +9 more
doaj   +1 more source

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

open access: yesAdvanced 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   +5 more
wiley   +1 more source

Hollow microstructural regulation of single-atom catalysts for optimized electrocatalytic performance

open access: yes, 2022
Single-atom catalysts (SACs) and hollow microstructured materials have recently undergone significant advancements in the field of catalysis. The combination of SACs and hollow microstructured materials can further endow them with extraordinary ...
Li, Ya-Dong   +2 more
core  

Random generation of 2D PFC microstructures through DEM gravimetric methods

open access: yes, 2022
Computational mechanics has proven to be a useful method to understand and assess the mechanical behaviour and main degradation mechanisms of Porous Friction Courses (PFC) at the microstructural level.
Manrique-Sanchez, Laura   +4 more
core   +1 more source

Non-invasive and fully two-dimensional quantitative visualization of transparent flow fields enabled by photonic spin-decoupled metasurfaces

open access: yesLight: Science & Applications
Transparent flow field visualization techniques play a critical role in engineering and scientific applications. They provide a clear and intuitive means to understand fluid dynamics and its complex phenomena, such as laminar flow, turbulence, and ...
Qingbin Fan   +6 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

Highly efficient field-free switching of perpendicular yttrium iron garnet with collinear spin current

open access: yesNature Communications
Yttrium iron garnet, a material possessing ultralow magnetic damping and extraordinarily long magnon diffusion length, is the most widely studied magnetic insulator in spintronics and magnonics. Field-free electrical control of perpendicular yttrium iron
Man Yang   +13 more
doaj   +1 more source

Magnetism of graphene quantum dots

open access: yesnpj Quantum Materials, 2017
Condensed matter physics: intrinsic magnetism emerges in graphene quantum dots A local magetic moment emerges in nanoscale high purity graphene quantum dots, probably resulting from edge passivation.
Yuanyuan Sun   +8 more
doaj   +1 more source

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