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

Authors
Seo, Jong-HyunYoo, YoungdongPark, Na-YoungYoon, Sang-WonLee, HyobanHan, SolLee, Seok-WooSeong, Tae-YeonLee, Seung-CheolLee, Kon-BaeCha, Pil-RyungPark, Harold S.Kim, BongsooAhn, Jae-Pyoung
Issue Date
8월-2011
Publisher
AMER CHEMICAL SOC
Keywords
gold; nanowire; mechanical; superplastic; tensile; deformation
Citation
NANO LETTERS, v.11, no.8, pp.3499 - 3502
Indexed
SCIE
SCOPUS
Journal Title
NANO LETTERS
Volume
11
Number
8
Start Page
3499
End Page
3502
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/111928
DOI
10.1021/nl2022306
ISSN
1530-6984
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.
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공과대학 (신소재공학부)
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