Non-destructive Detection of Screw Dislocations and the Corresponding Defects Nucleated from Them During SiC Epitaxial Growth and Their Effect on Device Characteristics
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Electronic Materials"
DOI: 10.1007/s11664-018-6414-3
Abstract: In high-volume manufacturing of SiC power devices like Schottky barrier diodes and MOSFETs, especially with the high demands of high reliability applications like the automotive market, the issue of reliability needs to be tackled from… read more here.
Keywords: destructive detection; epitaxial growth; screw dislocations; non destructive ... See more keywords
Weakened interlayer coupling in two-dimensional MoSe2 flakes with screw dislocations
Sign Up to like & getrecommendations! Published in 2019 at "Nano Research"
DOI: 10.1007/s12274-019-2456-y
Abstract: The screw dislocations are intriguing defects that are often observed in natural and artificial materials. The dislocation spirals break the reflection and inversion symmetries of the lattices and modify the interlayer coupling in layer-structured materials,… read more here.
Keywords: coupling two; mose2 flakes; flakes screw; interlayer coupling ... See more keywords
Helical dislocations: Observation of vacancy defect bias of screw dislocations in neutron irradiated Fe–9Cr
Sign Up to like & getrecommendations! Published in 2019 at "Acta Materialia"
DOI: 10.1016/j.actamat.2019.09.031
Abstract: Abstract We have analysed the microstructure of a model alloy of Fe9Cr irradiated with neutrons to a dose of 1.6 dpa at 325 °C. Helical dislocations comprise a major part of the damage; these formed from… read more here.
Keywords: helical dislocations; vacancy defect; dislocations observation; screw dislocations ... See more keywords
Understanding thermally-activated glide of 1/2〈110〉{110} screw dislocations in UO2 – A molecular dynamics analysis
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Plasticity"
DOI: 10.1016/j.ijplas.2018.07.003
Abstract: Abstract As shown experimentally, the interplay between screw and edge dislocations in uranium dioxide (UO2) determines the low-temperature plasticity in this material. For the latter, neither the mobility of screw dislocations nor the mechanisms of… read more here.
Keywords: activated glide; thermally activated; 110 110; 110 screw ... See more keywords
Single crystal yield criterion for chromium based on atomistic studies of isolated 1/2[111] screw dislocations
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Plasticity"
DOI: 10.1016/j.ijplas.2020.102733
Abstract: Abstract Using the recently developed Bond Order Potential for Cr, we investigate the mobility of isolated 1/2[111] screw dislocations under stress at 0 K. These studies provide the dependence of the critical resolved shear stress (i.e.,… read more here.
Keywords: criterion; isolated 111; 111 screw; stress ... See more keywords
Influence of solute hydrogen on the interaction of screw dislocations with vicinal twin boundaries in nickel
Sign Up to like & getrecommendations! Published in 2019 at "Scripta Materialia"
DOI: 10.1016/j.scriptamat.2019.08.010
Abstract: Abstract The influence of solute H on the interaction between screw dislocations and vicinal twin boundaries in Ni bicrystals is investigated using molecular dynamics (MD) simulations. Several interaction mechanisms such as dislocation transmission, nucleation and… read more here.
Keywords: vicinal twin; dislocations vicinal; screw dislocations; interaction ... See more keywords
Structure and Mobility of Dissociated Vacancies at Twist Grain Boundaries and Screw Dislocations in Ionic Rocksalt Compounds
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DOI: 10.1021/acs.chemmater.7b05172
Abstract: Interfaces, grain boundaries, and dislocations are known to have significant impact on the transport properties of materials. Even so, it is still not clear how the structure of interfaces influences the mobility and concentration of… read more here.
Keywords: mobility; twist grain; dissociated vacancies; grain boundaries ... See more keywords
Discovery of Double Helix and Impact on Nanoscale to Mesoscale Crystalline Structures
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DOI: 10.1021/acsomega.2c03501
Abstract: Screw dislocations play a significant role in the growth of crystalline structures by providing a continuous source of surface steps which represent available sites for crystal growth. Here, we show that pure screw dislocations can… read more here.
Keywords: eshelby twists; screw dislocations; double helix; formation ... See more keywords
Chirality-controlled crystallization via screw dislocations
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DOI: 10.1038/s41467-018-03745-4
Abstract: Chirality plays an important role in science from enantiomeric separation in chemistry to chiral plasmonics in nanotechnology. However, the understanding of chirality amplification from chiral building blocks to ordered helical superstructures remains a challenge. Here,… read more here.
Keywords: crystallization via; chirality controlled; chirality; controlled crystallization ... See more keywords
Controllable growth of two-dimensional SnSe2 flakes with screw dislocations and fractal structures
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DOI: 10.1039/d0ce00819b
Abstract: Two-dimensional (2D) structured layered chalcogenide materials play a pivotal role in a wide range of applications owing to their exotic physical properties and flexible architectures. Here, we report on the controllable synthesis of 2D SnSe2… read more here.
Keywords: fractal structures; dislocations fractal; two dimensional; snse2 flakes ... See more keywords
Influences of screw dislocations on electroluminescence of AlGaN/AlN-based UVC LEDs
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DOI: 10.1063/1.5108743
Abstract: We investigated two types of threading dislocations in high Al-composition Al0.55Ga0.45N/AlN multiple quantum well (MQW) structures grown on AlN substrate for electrically injected deep ultraviolet light-emitting diodes (LEDs). The surface morphology and defects electrical characteristics… read more here.
Keywords: algan aln; electroluminescence algan; influences screw; electroluminescence ... See more keywords