Deformation mechanisms of bent Si nanowires governed by the sign and magnitude of strain

Wang, Lihua, Kong, Deli, Xin, Tianjiao, Shu, Xinyu, Zheng, Kun, Xiao, Lirong, Sha, Xuechao, Lu, Yan, Zhang, Ze, Han, Xiaodong and Zou, Jin (2016) Deformation mechanisms of bent Si nanowires governed by the sign and magnitude of strain. Applied Physics Letters, 108 15: . doi:10.1063/1.4946855


Author Wang, Lihua
Kong, Deli
Xin, Tianjiao
Shu, Xinyu
Zheng, Kun
Xiao, Lirong
Sha, Xuechao
Lu, Yan
Zhang, Ze
Han, Xiaodong
Zou, Jin
Title Deformation mechanisms of bent Si nanowires governed by the sign and magnitude of strain
Journal name Applied Physics Letters   Check publisher's open access policy
ISSN 0003-6951
1077-3118
Publication date 2016-04-11
Year available 2016
Sub-type Article (original research)
DOI 10.1063/1.4946855
Open Access Status DOI
Volume 108
Issue 15
Total pages 5
Place of publication Melville, NY, United States
Publisher A I P Publishing
Collection year 2017
Language eng
Abstract In this study, the deformation mechanisms of bent Si nanowires are investigated at the atomic scale with bending strain up to 12.8%. The sign and magnitude of the applied strain are found to govern their deformation mechanisms, in which the dislocation types (full or partial dislocations) can be affected by the sign (tensile or compressive) and magnitude of the applied strain. In the early stages of bending, plastic deformation is controlled by 60°full dislocations. As the bending increases, Lomer dislocations can be frequently observed. When the strain increases to a significant level, 90°partial dislocations induced from the tensile surfaces of the bent nanowires are observed. This study provides a deeper understanding of the effect of the sign and magnitude of the bending strain on the deformation mechanisms in bent Si nanowires.
Keyword Si nanowires
NWs
Deformation mechanisms
Bending strain
Dislocation types
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
HERDC Pre-Audit
Centre for Microscopy and Microanalysis Publications
 
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