IMECH-IR  > 非线性力学国家重点实验室
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.
Source PublicationJOURNAL OF APPLIED PHYSICS
2011
Volume109Issue:12Pages:123504
ISSN0021-8979
AbstractThe 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]
DOI10.1063/1.3594655
Indexed BySCI ; EI
Language英语
WOS IDWOS:000292331200023
WOS KeywordMULTIWALLED CARBON NANOTUBES ; MECHANICAL-BEHAVIOR ; NANOSCALE ; STRENGTH ; MODES
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
Funding OrganizationNational Natural Science Foundation of China [50831001, 10772012] ; National 973 Project of China [2009CB623700, 2007CB814803]
DepartmentLNM材料的分子/细观统计力学行为
Classification二类/Q2
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58586
Collection非线性力学国家重点实验室
Corresponding AuthorZhu, J (reprint author), Tsinghua Univ, Beijing Natl Ctr Electron Microscopy, Adv Mat Lab, Dept Mat Sci & Engn, Beijing 100084, Peoples R China.
Recommended Citation
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.
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.
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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