Size-dependent brittle-to-ductile transition in GaAs nano-rods
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...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier Ltd
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/23217 |
| _version_ | 1848751089156882432 |
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| author | Wang, J. Shen, Y. Song, F. Ke, F. Bai, Y. Lu, Chunsheng |
| author_facet | Wang, J. Shen, Y. Song, F. Ke, F. Bai, Y. Lu, Chunsheng |
| author_sort | Wang, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T07:47:11Z |
| format | Journal Article |
| id | curtin-20.500.11937-23217 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:47:11Z |
| publishDate | 2014 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-232172018-03-29T09:06:48Z Size-dependent brittle-to-ductile transition in GaAs nano-rods Wang, J. Shen, Y. Song, F. Ke, F. Bai, Y. Lu, Chunsheng 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. 2014 Journal Article http://hdl.handle.net/20.500.11937/23217 10.1016/j.engfracmech.2015.04.006 Elsevier Ltd restricted |
| spellingShingle | Wang, J. Shen, Y. Song, F. Ke, F. Bai, Y. Lu, Chunsheng Size-dependent brittle-to-ductile transition in GaAs nano-rods |
| title | Size-dependent brittle-to-ductile transition in GaAs nano-rods |
| title_full | Size-dependent brittle-to-ductile transition in GaAs nano-rods |
| title_fullStr | Size-dependent brittle-to-ductile transition in GaAs nano-rods |
| title_full_unstemmed | Size-dependent brittle-to-ductile transition in GaAs nano-rods |
| title_short | Size-dependent brittle-to-ductile transition in GaAs nano-rods |
| title_sort | size-dependent brittle-to-ductile transition in gaas nano-rods |
| url | http://hdl.handle.net/20.500.11937/23217 |