Zig-zag surface step migration and structure modulation in metallic nanowires
Nanoscale metals frequently exhibit novel mechanical properties or physiochemical performances, due to the growing influence of surfaces. Here, we uncover a unique surface-mediated deformation behavior of Au nanowires by conducting in situ transmission electron microscope tensile testing. A zig-zag...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/177990 |
| _version_ | 1824453380244766720 |
|---|---|
| author | Li, Xiyao Zhu, Qi Song, Kexing Wang, Jiangwei |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Li, Xiyao Zhu, Qi Song, Kexing Wang, Jiangwei |
| author_sort | Li, Xiyao |
| collection | NTU |
| description | Nanoscale metals frequently exhibit novel mechanical properties or physiochemical performances, due to the growing influence of surfaces. Here, we uncover a unique surface-mediated deformation behavior of Au nanowires by conducting in situ transmission electron microscope tensile testing. A zig-zag migration of surface steps via the transverse slips on alternate (111) and (001) planes is revealed in [112]-oriented Au nanowire, which contributes to unexpected uniform deformation with an elongation of 108.9%. Further, we discover that the unusual (001) slip can induce an anomalous stacking structure on the nanowire surface under uniaxial tension. These findings enrich our understanding of surface-mediated plasticity in metallic nanomaterials. |
| first_indexed | 2024-10-01T07:59:26Z |
| format | Journal Article |
| id | ntu-10356/177990 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:59:26Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1779902024-06-04T01:03:58Z Zig-zag surface step migration and structure modulation in metallic nanowires Li, Xiyao Zhu, Qi Song, Kexing Wang, Jiangwei School of Mechanical and Aerospace Engineering Engineering Au nanowires Dislocation Nanoscale metals frequently exhibit novel mechanical properties or physiochemical performances, due to the growing influence of surfaces. Here, we uncover a unique surface-mediated deformation behavior of Au nanowires by conducting in situ transmission electron microscope tensile testing. A zig-zag migration of surface steps via the transverse slips on alternate (111) and (001) planes is revealed in [112]-oriented Au nanowire, which contributes to unexpected uniform deformation with an elongation of 108.9%. Further, we discover that the unusual (001) slip can induce an anomalous stacking structure on the nanowire surface under uniaxial tension. These findings enrich our understanding of surface-mediated plasticity in metallic nanomaterials. The authors acknowledge the support of the Joint Fund of Henan Province Science and Technology R&D Program (No. 225200810058) and the Startup Research Fund of Henan Academy of Sciences (Nos. 231817064 and 232017011). 2024-06-04T01:03:58Z 2024-06-04T01:03:58Z 2024 Journal Article Li, X., Zhu, Q., Song, K. & Wang, J. (2024). Zig-zag surface step migration and structure modulation in metallic nanowires. Materials Characterization, 209, 113752-. https://dx.doi.org/10.1016/j.matchar.2024.113752 1044-5803 https://hdl.handle.net/10356/177990 10.1016/j.matchar.2024.113752 2-s2.0-85184994367 209 113752 en Materials Characterization © 2024 Elsevier Inc. All rights reserved. |
| spellingShingle | Engineering Au nanowires Dislocation Li, Xiyao Zhu, Qi Song, Kexing Wang, Jiangwei Zig-zag surface step migration and structure modulation in metallic nanowires |
| title | Zig-zag surface step migration and structure modulation in metallic nanowires |
| title_full | Zig-zag surface step migration and structure modulation in metallic nanowires |
| title_fullStr | Zig-zag surface step migration and structure modulation in metallic nanowires |
| title_full_unstemmed | Zig-zag surface step migration and structure modulation in metallic nanowires |
| title_short | Zig-zag surface step migration and structure modulation in metallic nanowires |
| title_sort | zig zag surface step migration and structure modulation in metallic nanowires |
| topic | Engineering Au nanowires Dislocation |
| url | https://hdl.handle.net/10356/177990 |
| work_keys_str_mv | AT lixiyao zigzagsurfacestepmigrationandstructuremodulationinmetallicnanowires AT zhuqi zigzagsurfacestepmigrationandstructuremodulationinmetallicnanowires AT songkexing zigzagsurfacestepmigrationandstructuremodulationinmetallicnanowires AT wangjiangwei zigzagsurfacestepmigrationandstructuremodulationinmetallicnanowires |