Superplastic Deformation of Defect-Free Au Nanowires via Coherent Twin propagation

Title
Superplastic Deformation of Defect-Free Au Nanowires via Coherent Twin propagation
Authors
서종현유영동박나영윤상원이효반한솔이석우성태연이승철이건배차필령Harold S. Park김봉수안재평
Keywords
gold; plastic deformation; tensile experiment; twin propagation; nano; mechanical; superplastic; tensile; deformation; nanowire
Issue Date
2011-08
Publisher
Nano letters
Citation
VOL 11, NO 8, 3499-3502
Abstract
We report that defect-free Au nanowires show superplasticity on tensile deformation. Evidences from highresolution 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 welldisciplined and long-propagating atomic movements deduced here are ascribed to the superb crystallinity as well as the radial confinement of the Au nanowires.
URI
http://pubs.kist.re.kr/handle/201004/40894
ISSN
1530-6984
Appears in Collections:
KIST Publication > Article
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