Results 1 to 10 of about 4,736,353 (261)
On plastic dislocation density tensor [PDF]
Results in Physics, 2019 This article attempts to clarify an issue regarding the proper definition of plastic dislocation density tensor. This study shows that the Ortiz’s and Berdichevsky’s plastic dislocation density tensors are equivalent with each other, but not with Kondo’s
Bohua Sun
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A Comparative Study of Methods for Calculating the Dislocation Density in GaN-on-Si Epitaxial Wafers [PDF]
MicromachinesA series of characterization methods involving high-resolution X-ray diffraction (HR-XRD), electron channel contrast imaging (ECCI), cathodoluminescence microscopy (CL), and atomic force microscopy (AFM) were applied to calculate the dislocation density ...
Yujie Yan +5 more
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Effect of size, temperature and strain rate on dislocation density and deformation mechanisms in Cu nanowires [PDF]
Physica B: Condensed Matter, 2019 In the present study, molecular dynamics (MD) simulations have been performed to understand the effect of nanowire size, temperature and strain rate on the variations in dislocation density and deformation mechanisms in Cu nanowires.
Rohith Polisetty, Sainath G
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Dislocation Density‐Mediated Functionality in Single‐Crystal BaTiO3 [PDF]
Advanced ScienceUnlike metals where dislocations carry strain singularity but no charge, dislocations in oxide ceramics are characterized by both a strain field and a local charge with a compensating charge envelope.
Fangping Zhuo +8 more
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Intergranular fracture, grain-boundary structure, and dislocation-density interactions in FCC bicrystals [PDF]
Scientific ReportsA dislocation-density based crystalline plasticity (DCP) and nonlinear finite element (FE) analysis were used to predict, and fundamentally understand how and why fracture nucleation and propagation are related to the interrelated microstructural ...
Muh-Jang Chen +5 more
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Guidelines for establishing an etching procedure for dislocation density measurements on multicrystalline silicon samples [PDF]
MethodsX, 2018 With multicrystalline silicon becoming the main material used for photovoltaic applications and dislocations being one of the main material limitations to better solar cell efficiency, etch pit density measurements are gaining more importance ...
Krzysztof Adamczyk +2 more
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Dynamic Hardness Evolution in Metals from Impact Induced Gradient Dislocation Density [PDF]
Acta Materialia, 2022 A clear understanding of the dynamic behavior of metals is critical for developing superior structural materials as well as for improving material processing techniques such as cold spray and shot peening.
Jizhe Cai +3 more
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Applied Physics Letters, 2022 We report on the effect of dislocation density on the ferroelectric properties of single-crystalline ScAlN thin films grown by molecular beam epitaxy. Wurtzite phase and atomically smooth ScAlN films have been grown on bulk GaN, GaN on sapphire, and GaN ...
Ding Wang +5 more
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Metals, 2021 The variation rule of the Volta potential on deformed copper surfaces with the dislocation density is determined in this study by using electron back-scattered diffraction (EBSD) in conjunction with scanning Kelvin probe force microscopy (SKPFM).
Yang Zhang, Wei Shi, Song Xiang
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Nuclear Engineering and Technology, 2021 The dislocation density in strain-hardened Alloy 690 was analyzed using scanning transmission electron microscopy (STEM) to study the relationship between the local plastic strain and susceptibility to primary water stress corrosion cracking (PWSCC) in ...
Sung-Woo Kim +2 more
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