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Hwang B, Kang M, Lee S, et al. Effect of surface energy on size-dependent deformation twinning of defect-free Au nanowires. Nanoscale. 2015;7(38):15657-64doi: 10.1039/c5nr03902a.
Hwang, B., Kang, M., Lee, S., Weinberger, C. R., Loya, P., Lou, J., Oh, S. H., Kim, B., & Han, S. M. (2015). Effect of surface energy on size-dependent deformation twinning of defect-free Au nanowires. Nanoscale, 7(38), 15657-64. https://doi.org/10.1039/c5nr03902a
Hwang, Byungil, et al. "Effect of surface energy on size-dependent deformation twinning of defect-free Au nanowires." Nanoscale vol. 7,38 (2015): 15657-64. doi: https://doi.org/10.1039/c5nr03902a
Hwang B, Kang M, Lee S, Weinberger CR, Loya P, Lou J, Oh SH, Kim B, Han SM. Effect of surface energy on size-dependent deformation twinning of defect-free Au nanowires. Nanoscale. 2015 Oct 14;7(38):15657-64. doi: 10.1039/c5nr03902a. Epub 2015 Sep 09. PMID: 26350050.
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Nanoscale. 2015 Oct 14;7(38):15657-64. doi: 10.1039/c5nr03902a. Epub 2015 Sep 09.

Effect of surface energy on size-dependent deformation twinning of defect-free Au nanowires.

Nanoscale

Byungil Hwang, Mijeong Kang, Subin Lee, Christopher R Weinberger, Phillip Loya, Jun Lou, Sang Ho Oh, Bongsoo Kim, Seung Min Han

Affiliations

  1. Graduate School of Energy Environment Water and Sustainability, Korea Advanced Institute of Science & Technology, Daejeon, Republic of Korea 305-701. [email protected] [email protected].

PMID: 26350050 DOI: 10.1039/c5nr03902a

Abstract

In this study, we report the size-dependent transition of deformation twinning studied using in situ SEM/TEM tensile testing of defect-free [110] Au nanowires/ribbons with controlled geometry. The critical dimension below which the ordinary plasticity transits to deformation twinning is experimentally determined to be ∼170 nm for Au nanowires with equilateral cross-sections. Nanoribbons with a fixed thickness but increased width-to-thickness ratios (9 : 1) were also studied to show that an increase in the surface energy due to the crystal re-orientation suppresses the deformation twinning. Molecular dynamics simulations confirmed that the transition from partial dislocation mediated plasticity to perfect dislocation plasticity with increase in the width-to-thickness ratio is due to the effect of the surface energy.

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