Results 51 to 60 of about 2,415 (216)

Automated Reconstruction and Conforming Mesh Generation for Polycrystalline Microstructures from Imaging Data

Applied Sciences
A new algorithm named PolyCISAMR is introduced to automatically generate high-fidelity conforming finite element (FE) meshes for two-dimensional polycrystalline microstructures.
Balavignesh Vemparala, Wadi H. Imseeh, Salil Pai, Anand Nagarajan, Timothy Truster, Soheil Soghrati   +5 more
doaj   +1 more source

Surface‐Spin‐Induced Magnetic Loss Enhancement in Ultralight Electromagnetic Absorbers

Advanced Science, EarlyView.
Fe3O4 nanoparticles with different hollow rates were synthesized to demonstrate the key role of surface moment in magnetic loss process. Using the same volume filling ratio, the 54.1% hollow Fe3O4 absorber represents about 20% enhancement in the imaginary part (μ'') than solid particles due to the coexisting magnetic resonance of inside and outside ...
Ruimin Ren, Ke Yang, Chichong Lu, Song Ma, Bowen Zheng, Zhenhui Ma   +5 more
wiley   +1 more source

The Dislocation Mechanics of Crystal/Polycrystal Plasticity

Crystals, 2022
A brief history and update are given in four examples demonstrating that polycrystals are generally stronger than their individual component crystal grains because of obstructed dislocation pile-ups at grain boundaries.
Ronald W. Armstrong
doaj   +1 more source

Cation Diffusion‐Mediated Displaced Reaction‐Transformation in Green Steelmaking

Advanced Science, EarlyView.
The removal of O lattice atoms by environmental H2 at the surface of Fe3O4 results in Fe enrichment, driving the inward diffusion of Fe cations into the bulk. Through hopping between unoccupied and initially occupied sites, cation diffusion triggers a spatially displaced reaction‐transformation and drives subsequent dynamic phase transformations and ...
Guangyi Guo, Paul Paciok, Baptiste Bienvenu, Longqi Bai, Barak Ratzker, Marc Heggen, Xuyang Zhou, Dierk Raabe   +7 more
wiley   +1 more source

Advances and future perspectives in polycrystalline halide perovskite light-emitting diodes

Journal of Information Display
Metal halide perovskites (MHPs) have emerged as a highly promising candidate for next-generation light-emitting materials due to their exceptional optoelectronic properties.
Seong Eui Chang, Chan-Yul Park, Eojin Yoon, Joo Sung Kim, Tae-Woo Lee   +4 more
doaj   +1 more source

Stabilized Cubic GeTe With Matched Grain‐Boundary Networks and Band Convergence for High‐Performance Dual‐Mode Thermoelectric Devices

Advanced Science, EarlyView.
I‐doping stabilizes the cubic phase of GeTe and generates “electron‐transparent, phonon‐blocking” grain boundary networks while inducing valence‐band convergence. This synergistic structural‐electronic design enables effective electron‐phonon decoupling, achieving an exceptional average zTave of ∼1.62, a peak zT of ∼2.2, and enhanced mechanical ...
Xiaobo Tan, Xuri Rao, Huangshui Ma, Jiaxing Luo, Fan Feng, Zijian Lin, Ruiheng Li, Maoji Tian, Siqi Huo, Min Hong, Ran Ang   +10 more
wiley   +1 more source

Investigation of the Microstructure of Photosensitive CdSe and CdSe:Cd,Cl Thin Films

East European Journal of Physics
The substructure of freshly prepared photosensitive CdSe and doped CdSe:Cd, Cl thin films was investigated with respect to the influence of substrate temperature Ts and heat-treatment time in air in the presence of  vapor.
Iftixorjon I. Yulchiyev, Bakhodir K. Tuychibaev, Nosirjon Kh. Yuldashev, Khusanboy M. Sulaymonov, Gulkan A. Hasanova, Maralbek Ch. Oskonbaev, Islamidin Tashpolotov   +6 more
doaj   +1 more source

Polycrystal thermo-elasticity revisited: theory and applications

Comptes Rendus. Mécanique, 2020
The self-consistent (SC) theory is the most commonly used mean-field homogenization method to estimate the mechanical response behavior of polycrystals based on the knowledge of the properties and orientation distribution of constituent single-crystal ...
Tomé, Carlos N., Lebensohn, Ricardo A.
doaj   +1 more source

Advances in Computational and Experimental Approaches to Chemical Short‐Range Order Formation in Multi‐Principal Element Alloys

Advanced Science, EarlyView.
Chemical short‐range order (CSRO) plays a central role in governing the behavior of multi‐principal element alloys. This perspective critically assesses computational and experimental approaches for quantifying, characterizing, and validating CSRO, emphasizing modeling–experiment cross‐validation pathways that enable more reliable interpretation of ...
Mohsen Asle Zaeem, Peter K. Liaw
wiley   +1 more source

Poisson Ratios of Polycrystals [PDF]

Zeitschrift für Naturforschung A, 1987
Poisson ratios of fee and bcc polycrystals are calculated for a variety of atomic models and the theoretical results are compared with experiment. In contrast with previously reported results, it is found that an accurate description of polycrystalline Poisson ratios of metals is obtained from the model in which the binding energy ...
Frederick Milstein, Andrew M. Budek
openaire   +1 more source