On the wurtzite to tetragonal phase transformation in ZnO nanowires
There is a long standing contradiction on the tensile response of zinc oxide nanowires between theoretical prediction and experimental observations. Although it is proposed that there is a ductile behavior dominated by phase transformation, only an elastic deformation and brittle fracture was witnes...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Institute of Physics Publishing Ltd.
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/51350 |
| _version_ | 1848758675876872192 |
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| author | Wang, J. Shen, Y. Song, F. Ke, F. Liao, X. Lu, Chunsheng |
| author_facet | Wang, J. Shen, Y. Song, F. Ke, F. Liao, X. Lu, Chunsheng |
| author_sort | Wang, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | There is a long standing contradiction on the tensile response of zinc oxide nanowires between theoretical prediction and experimental observations. Although it is proposed that there is a ductile behavior dominated by phase transformation, only an elastic deformation and brittle fracture was witnessed in experiments. Using molecular dynamics simulations, we clarified that, as the lateral dimension of zinc oxide nanowires increases to a critical value, an unambiguous ductile-to-brittle transition occurs. The critical value increases with decreasing the strain rate. Factors including planar defects and surface contamination induce brittle fracture prior to the initiation of phase transformation. These findings are consistent with previous atomistic standpoints and experimental results. |
| first_indexed | 2025-11-14T09:47:46Z |
| format | Journal Article |
| id | curtin-20.500.11937-51350 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:47:46Z |
| publishDate | 2017 |
| publisher | Institute of Physics Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-513502018-03-29T09:08:25Z On the wurtzite to tetragonal phase transformation in ZnO nanowires Wang, J. Shen, Y. Song, F. Ke, F. Liao, X. Lu, Chunsheng There is a long standing contradiction on the tensile response of zinc oxide nanowires between theoretical prediction and experimental observations. Although it is proposed that there is a ductile behavior dominated by phase transformation, only an elastic deformation and brittle fracture was witnessed in experiments. Using molecular dynamics simulations, we clarified that, as the lateral dimension of zinc oxide nanowires increases to a critical value, an unambiguous ductile-to-brittle transition occurs. The critical value increases with decreasing the strain rate. Factors including planar defects and surface contamination induce brittle fracture prior to the initiation of phase transformation. These findings are consistent with previous atomistic standpoints and experimental results. 2017 Journal Article http://hdl.handle.net/20.500.11937/51350 10.1088/1361-6528/aa6566 Institute of Physics Publishing Ltd. restricted |
| spellingShingle | Wang, J. Shen, Y. Song, F. Ke, F. Liao, X. Lu, Chunsheng On the wurtzite to tetragonal phase transformation in ZnO nanowires |
| title | On the wurtzite to tetragonal phase transformation in ZnO nanowires |
| title_full | On the wurtzite to tetragonal phase transformation in ZnO nanowires |
| title_fullStr | On the wurtzite to tetragonal phase transformation in ZnO nanowires |
| title_full_unstemmed | On the wurtzite to tetragonal phase transformation in ZnO nanowires |
| title_short | On the wurtzite to tetragonal phase transformation in ZnO nanowires |
| title_sort | on the wurtzite to tetragonal phase transformation in zno nanowires |
| url | http://hdl.handle.net/20.500.11937/51350 |