@article{a1275facf3ff4d86bb7564bf7025b61c,
title = "Concurrent atomistic-continuum simulations of uniaxial compression of gold nano/submicropillars",
abstract = "In this work, uniaxial compression of nano/submicropillars in Au with the initial diameter D between 26.05 and 158.53 nm was modelled by concurrent atomistic-continuum simulations. Two models with distinct surface facets were employed to explore the surface facets-dependent extrinsic size effects on the plastic deformation of pillars. It is found that (i) the yielding in pillars with smooth surfaces was controlled by dislocation nucleation from the two ends of the pillars, and (ii) in pillars with faceted surfaces, dislocations were initiated from the sharp edges on the surface. As a result of the differences in the plastic deformation mechanism between the two models, the yield stress decreased exponentially and increased nearly linearly with respect to an increasing D in pillars with smooth and faceted surfaces, respectively.",
keywords = "Concurrent atomistic-continuum method, nano/submicropillar, uniaxial compression",
author = "Shuozhi Xu and Latypov, {Marat I.} and Yanqing Su",
note = "Funding Information: The work of SX was supported in part by the Elings Prize Fellowship in Science offered by the California NanoSystems Institute (CNSI) on the UC Santa Barbara campus. The authors acknowledge support from the Center for Scientific Computing from the CNSI, MRL: an NSF MRSEC (DMR-1720256) and NSF CNS-1725797. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number ACI-1053575. The authors thank Mr. Rui Che for helpful discussions. Funding Information: The work of SX was supported in part by the Elings Prize Fellowship in Science offered by the California NanoSystems Institute (CNSI) on the UC Santa Barbara campus. The authors acknowledge support from the Center for Scientific Computing from the CNSI, MRL: an NSF MRSEC (DMR-1720256) and NSF CNS-1725797. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number ACI-1053575. Publisher Copyright: {\textcopyright} 2018, {\textcopyright} 2018 Informa UK Limited, trading as Taylor & Francis Group.",
year = "2018",
month = may,
day = "4",
doi = "10.1080/09500839.2018.1515506",
language = "English (US)",
volume = "98",
pages = "173--182",
journal = "Philosophical Magazine Letters",
issn = "0950-0839",
publisher = "Taylor and Francis Ltd.",
number = "5",
}