| Size-dependent brittle-to-ductile transition in GaAs nano-rods |
| Wang J(王军) ; Shen YG; Song F(宋凡); Ke FJ(柯孚久); Bai YL(白以龙); Lu C; Lu, C (reprint author), Curtin Univ, Dept Mech Engn, Perth, WA 6845, Australia.
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| 发表期刊 | ENGINEERING FRACTURE MECHANICS
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| 2015-12
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| 卷号 | 150页码:135-142 |
| ISSN | 0013-7944
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| 摘要 | GaAs is brittle at room temperature at the macro-scale; however, ductility emerges when its characteristic dimension reduces to the nano-scale. Using molecular dynamics simulations, we reveal that there is a brittle-to-ductile transition in GaAs nano-rods due to the competition between generation of cracks and initiation of dislocations. Such a competition is sensitive to aspect ratios of nano-rods. These results well explain experimentally observed ductility of GaAs nano-rods and have important implications for the design of semiconductor materials with tailored mechanical properties. (C) 2015 Elsevier Ltd. All rights reserved. |
| 关键词 | Molecular Dynamics Simulation
Gaas Nano-rods
Brittle-to-ductile Transition
Dislocation
Size Effect
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| DOI | 10.1016/j.engfracmech.2015.04.006
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000366309400010
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| 关键词[WOS] | MOLECULAR-DYNAMICS
; SIC NANOWIRES
; PLASTIC-DEFORMATION
; LOW-TEMPERATURE
; SIMULATIONS
; SILICON
; GROWTH
; CARBON
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| WOS研究方向 | Mechanics
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| WOS类目 | Mechanics
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| 项目资助者 | This work has been supported by the National Natural Science Foundation of China (Grant Nos. 11172024, 11232013 and 11372022), the National Basic Research Program of China (2012CB937500), the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, the Opening Fund of State Key Laboratory of Nonlinear Mechanics (LNM), the Research Grant Council of the Hong Kong Special Administrative Region, China [Project No. 9041679 (CityU 120611)], and the Australian Research Council (Grant No. DP0985450). Computations were performed on the ScGrid of Supercomputing Center, Computer Network Information Center of Chinese Academy of Sciences, the LNMGrid of the State Key Laboratory of Nonlinear Mechanics and the Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia.
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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 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/58362
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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 | Lu, C (reprint author), Curtin Univ, Dept Mech Engn, Perth, WA 6845, Australia. |
推荐引用方式
GB/T 7714 |
Wang J,Shen YG,Song F,et al. Size-dependent brittle-to-ductile transition in GaAs nano-rods[J]. ENGINEERING FRACTURE MECHANICS,2015,150:135-142.
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| APA |
王军.,Shen YG.,宋凡.,柯孚久.,白以龙.,...&Lu, C .(2015).Size-dependent brittle-to-ductile transition in GaAs nano-rods.ENGINEERING FRACTURE MECHANICS,150,135-142.
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| MLA |
王军,et al."Size-dependent brittle-to-ductile transition in GaAs nano-rods".ENGINEERING FRACTURE MECHANICS 150(2015):135-142.
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