Journal
NANOSCALE
Volume 7, Issue 38, Pages 15657-15664Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr03902a
Keywords
-
Categories
Funding
- Ministry of Science, ICT and Future Planning as Global Frontier Project (CAMM) [2014063701]
- National Research Foundation (NRF) of Korea [2014R1A4A1003712]
- NRF [2013R1A2A2A01069073]
- Public Welfare Safety Program [NRF-2012M3A2A1051686]
- AFOSR [FA9550-13-1-0084]
Ask authors/readers for more resources
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 similar to 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available