Abstract
We report that defect-free Au nanowires show superplasticity on tensile deformation. Evidences from high-resolution electron microscopes indicated that the plastic deformation proceeds layer-by-layer in an atomically coherent fashion to a long distance. Furthermore, the stress-strain curve provides full interpretation of the deformation. After initial superelastic deformation, the nanowire shows superplastic deformation induced by coherent twin propagation, completely reorientating the crystal from <110> to <100>. Uniquely well-disciplined and long-propagating atomic movements deduced here are ascribed to the superb crystallinity as well as the radial confinement of the Au nanowires.
Original language | English (US) |
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Pages (from-to) | 3499-3502 |
Number of pages | 4 |
Journal | Nano letters |
Volume | 11 |
Issue number | 8 |
DOIs | |
State | Published - Aug 10 2011 |
Keywords
- deformation
- gold
- mechanical
- nanowire
- superplastic
- tensile