An atomistic assessment of the impact of flaw orientation on the elastic and failure behavior of single-crystal Si nanometre-thick slabs
| العنوان: | An atomistic assessment of the impact of flaw orientation on the elastic and failure behavior of single-crystal Si nanometre-thick slabs |
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| المؤلفون: | W.-J. Huang, Stefan Bringuier, Joshua Paul, K. Simmons-Potter, Krishna Muralidharan, Barrett G. Potter |
| المصدر: | Philosophical Magazine. 97:2425-2436 |
| بيانات النشر: | Informa UK Limited, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 010302 applied physics, Materials science, Interatomic potential, Fracture mechanics, 02 engineering and technology, Slip (materials science), 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Molecular dynamics, Brittleness, 0103 physical sciences, Perpendicular, Nanometre, Composite material, 0210 nano-technology, Single crystal |
| الوصف: | Failure of nanoscale Si thin films was examined using molecular dynamics (MD) simulations that employed the modified embedded atom method (MEAM) interatomic potential. Specifically, nanometre-thick slabs of different crystallographic orientations containing asymmetric, high aspect ratio surface flaws were subjected to uniaxial tensile strains with the strain applied perpendicular to the flaw major axis. The ensuing elastic response and failure behaviour were examined as a function of variation in crystallographic orientation relative to the surface flaw. For certain flaw orientations, crack propagation was accompanied by slip along preferred directions, while in other cases, failure was purely brittle. In addition, a significant dependence of the computed elastic constants and yield stress, on the relative orientation of the surface flaw was observed. This work offers new insights into the role of surface flaws on the mechanical failure of silicon-based, nanoscale, engineered structures. |
| تدمد: | 1478-6443 1478-6435 |
| DOI: | 10.1080/14786435.2017.1340686 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::e47b4774871cf0a93294121ac37df401 https://doi.org/10.1080/14786435.2017.1340686 |
| رقم الانضمام: | edsair.doi...........e47b4774871cf0a93294121ac37df401 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14786443 14786435 |
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| DOI: | 10.1080/14786435.2017.1340686 |