| Quantifying the Defect-Dominated Size Effect of Fracture Strain in Single Crystalline Zno Nanowires |
| He MR; Xiao P(肖攀) ; Zhao J; Dai S; Ke FJ(柯孚久); Zhu J; Zhu, J (reprint author), Tsinghua Univ, Beijing Natl Ctr Electron Microscopy, Adv Mat Lab, Dept Mat Sci & Engn, Beijing 100084, Peoples R China.
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| 发表期刊 | JOURNAL OF APPLIED PHYSICS
 |
| 2011
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| 卷号 | 109期号:12页码:123504 |
| ISSN | 0021-8979
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| 摘要 | The diameter (D) dependence of fracture strains in [0001]-oriented single crystalline ZnO nanowires (NWs) with D ranging from 18 to 114 nm is experimentally revealed via in situ uniaxial tension and is well understood based on an analytical model developed by combining molecular dynamics simulations with fracture mechanics theories. We show that the scattered fracture strains are dominated by the effective quantities of atomic vacancies, and their lower bound follows a power-form scaling law, resembling the Griffith-type behavior of single critical defects with diameter-dependent sizes, when D is larger than a critical DC. In addition, theoretical strength is expected in NWs with D < D-C. Our studies provide a simple, but basic, understanding for the size effect of strengths in single crystalline NWs. (C) 2011 American Institute of Physics. [doi:10.1063/1.3594655] |
| DOI | 10.1063/1.3594655
|
| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000292331200023
|
| 关键词[WOS] | MULTIWALLED CARBON NANOTUBES
; MECHANICAL-BEHAVIOR
; NANOSCALE
; STRENGTH
; MODES
|
| WOS研究方向 | Physics
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| WOS类目 | Physics, Applied
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| 项目资助者 | National Natural Science Foundation of China [50831001, 10772012]
; National 973 Project of China [2009CB623700, 2007CB814803]
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| 课题组名称 | LNM材料的分子/细观统计力学行为
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| 论文分区 | 二类/Q2
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| 引用统计 |
|
| 文献类型 | 期刊论文
|
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/58586
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| 专题 | 非线性力学国家重点实验室
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| 通讯作者 | Zhu, J (reprint author), Tsinghua Univ, Beijing Natl Ctr Electron Microscopy, Adv Mat Lab, Dept Mat Sci & Engn, Beijing 100084, Peoples R China. |
推荐引用方式
GB/T 7714 |
He MR,Xiao P,Zhao J,et al. Quantifying the Defect-Dominated Size Effect of Fracture Strain in Single Crystalline Zno Nanowires[J]. JOURNAL OF APPLIED PHYSICS,2011,109,12,:123504.
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| APA |
He MR.,肖攀.,Zhao J.,Dai S.,柯孚久.,...&Zhu, J .(2011).Quantifying the Defect-Dominated Size Effect of Fracture Strain in Single Crystalline Zno Nanowires.JOURNAL OF APPLIED PHYSICS,109(12),123504.
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| MLA |
He MR,et al."Quantifying the Defect-Dominated Size Effect of Fracture Strain in Single Crystalline Zno Nanowires".JOURNAL OF APPLIED PHYSICS 109.12(2011):123504.
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