Facet‐Dependent Cold Welding of Au Nanorods Revealed by Liquid Cell Transmission Electron Microscopy
Abstract Cold welding of metals at the nanoscale has been demonstrated to play a significant role in bottom‐up manufacturing and self‐healing processes of nanostructures and nanodevices. However, the welding mechanism at the nanoscale is not well understood. In this study, a comprehensive demonstrat...
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Wiley
2025-03-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202412779 |
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| author | Wen Wang Dongxing Song Fangjie Meng Sufeng Fan Ran Cai Shaobo Cheng Chongxin Shan Tao Xu Haimei Zheng Litao Sun |
| author_facet | Wen Wang Dongxing Song Fangjie Meng Sufeng Fan Ran Cai Shaobo Cheng Chongxin Shan Tao Xu Haimei Zheng Litao Sun |
| author_sort | Wen Wang |
| collection | DOAJ |
| description | Abstract Cold welding of metals at the nanoscale has been demonstrated to play a significant role in bottom‐up manufacturing and self‐healing processes of nanostructures and nanodevices. However, the welding mechanism at the nanoscale is not well understood. In this study, a comprehensive demonstration of the cold welding process of gold nanorods with different modes is presented through in situ liquid cell transmission electron microscopy. The experimental results and molecular dynamics simulations reveal that the nanorods are welded through the facet‐dependent atomic surface diffusion and rearrangement along {100} facets. The density functional theory calculations indicate that the preferred coalescence of two {100} surfaces is thermodynamically favorable. Unlike the prevalent “oriented attachment” in the nanoparticle coalescence, the misalignment of nanorod orientations and local stresses can induce grain boundaries and stacking faults in the welded interface. |
| format | Article |
| id | doaj-art-14d191c7d95b43c386a91b23a4c0a034 |
| institution | OA Journals |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-14d191c7d95b43c386a91b23a4c0a0342025-08-20T01:49:41ZengWileyAdvanced Science2198-38442025-03-011212n/an/a10.1002/advs.202412779Facet‐Dependent Cold Welding of Au Nanorods Revealed by Liquid Cell Transmission Electron MicroscopyWen Wang0Dongxing Song1Fangjie Meng2Sufeng Fan3Ran Cai4Shaobo Cheng5Chongxin Shan6Tao Xu7Haimei Zheng8Litao Sun9Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Materials Physics Ministry of Education, and School of Physics Zhengzhou University Zhengzhou 450052 ChinaEngineering Technology Research Center of Henan Province for MEMS Manufacturing and Applications School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou 450001 ChinaEngineering Technology Research Center of Henan Province for MEMS Manufacturing and Applications School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou 450001 ChinaEngineering Technology Research Center of Henan Province for MEMS Manufacturing and Applications School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou 450001 ChinaSchool of Medical Technology Beijing Institute of Technology Beijing 100081 ChinaHenan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Materials Physics Ministry of Education, and School of Physics Zhengzhou University Zhengzhou 450052 ChinaHenan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Materials Physics Ministry of Education, and School of Physics Zhengzhou University Zhengzhou 450052 ChinaSEU‐FEI Nano‐Pico Center Key Lab of MEMS of Ministry of Education Southeast University Nanjing 210096 ChinaMaterials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USASEU‐FEI Nano‐Pico Center Key Lab of MEMS of Ministry of Education Southeast University Nanjing 210096 ChinaAbstract Cold welding of metals at the nanoscale has been demonstrated to play a significant role in bottom‐up manufacturing and self‐healing processes of nanostructures and nanodevices. However, the welding mechanism at the nanoscale is not well understood. In this study, a comprehensive demonstration of the cold welding process of gold nanorods with different modes is presented through in situ liquid cell transmission electron microscopy. The experimental results and molecular dynamics simulations reveal that the nanorods are welded through the facet‐dependent atomic surface diffusion and rearrangement along {100} facets. The density functional theory calculations indicate that the preferred coalescence of two {100} surfaces is thermodynamically favorable. Unlike the prevalent “oriented attachment” in the nanoparticle coalescence, the misalignment of nanorod orientations and local stresses can induce grain boundaries and stacking faults in the welded interface.https://doi.org/10.1002/advs.202412779Au nanorodscold weldingin situ TEMwelded interfacewelding mechanism |
| spellingShingle | Wen Wang Dongxing Song Fangjie Meng Sufeng Fan Ran Cai Shaobo Cheng Chongxin Shan Tao Xu Haimei Zheng Litao Sun Facet‐Dependent Cold Welding of Au Nanorods Revealed by Liquid Cell Transmission Electron Microscopy Advanced Science Au nanorods cold welding in situ TEM welded interface welding mechanism |
| title | Facet‐Dependent Cold Welding of Au Nanorods Revealed by Liquid Cell Transmission Electron Microscopy |
| title_full | Facet‐Dependent Cold Welding of Au Nanorods Revealed by Liquid Cell Transmission Electron Microscopy |
| title_fullStr | Facet‐Dependent Cold Welding of Au Nanorods Revealed by Liquid Cell Transmission Electron Microscopy |
| title_full_unstemmed | Facet‐Dependent Cold Welding of Au Nanorods Revealed by Liquid Cell Transmission Electron Microscopy |
| title_short | Facet‐Dependent Cold Welding of Au Nanorods Revealed by Liquid Cell Transmission Electron Microscopy |
| title_sort | facet dependent cold welding of au nanorods revealed by liquid cell transmission electron microscopy |
| topic | Au nanorods cold welding in situ TEM welded interface welding mechanism |
| url | https://doi.org/10.1002/advs.202412779 |
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