| 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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| Source Publication | ENGINEERING FRACTURE MECHANICS
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| 2015-12 | |
| Volume | 150Pages:135-142 |
| ISSN | 0013-7944 |
| Abstract | 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. |
| Keyword | Molecular Dynamics Simulation Gaas Nano-rods Brittle-to-ductile Transition Dislocation Size Effect |
| DOI | 10.1016/j.engfracmech.2015.04.006 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000366309400010 |
| WOS Keyword | MOLECULAR-DYNAMICS ; SIC NANOWIRES ; PLASTIC-DEFORMATION ; LOW-TEMPERATURE ; SIMULATIONS ; SILICON ; GROWTH ; CARBON |
| WOS Research Area | Mechanics |
| WOS Subject | Mechanics |
| Funding Organization | 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. |
| Department | LNM材料的分子/细观统计力学行为 |
| Classification | 二类/Q2 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/58362 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Lu, C (reprint author), Curtin Univ, Dept Mech Engn, Perth, WA 6845, Australia. |
| Recommended Citation 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. |
| 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. |
| 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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