Suppressed Rupture of Thin Metal Films via van der Waals Epitaxy
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866917288632909824 |
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| author | Wang, Wenxiang Wang, Jiaxing Wang, Guotong Yan, Zhichao Jiang, Chenxiao Zhou, Siqin Yu, Chuanli Chen, Jianhao Zheng, Kun Salez, Thomas Wei, Xiaoding Dai, Zhaohe |
| author_facet | Wang, Wenxiang Wang, Jiaxing Wang, Guotong Yan, Zhichao Jiang, Chenxiao Zhou, Siqin Yu, Chuanli Chen, Jianhao Zheng, Kun Salez, Thomas Wei, Xiaoding Dai, Zhaohe |
| contents | Ultrathin metal films exhibit liquid-like instabilities, rupturing via surface diffusion far below their melting points. This behavior constrains thermal budgets for advanced integrated circuits and emerging 2D-crystal devices. Here, we demonstrate that these instabilities can be fundamentally suppressed using graphene as a van der Waals (vdW) template. While conventional 20-nm-thick gold films break up into islands below 300 {\textdegree}C, templated films not only remain stable but also become structurally refined after annealing above 600 {\textdegree}C. This exceptional stability stems from a vdW-mediated crystallographic texture that reorganizes grain boundaries into a mechanically robust network. This mechanism significantly widens the processing window for nanoscale interconnects and enables high-temperature integration of metals with 2D-crystal technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_19827 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Suppressed Rupture of Thin Metal Films via van der Waals Epitaxy Wang, Wenxiang Wang, Jiaxing Wang, Guotong Yan, Zhichao Jiang, Chenxiao Zhou, Siqin Yu, Chuanli Chen, Jianhao Zheng, Kun Salez, Thomas Wei, Xiaoding Dai, Zhaohe Soft Condensed Matter Applied Physics Ultrathin metal films exhibit liquid-like instabilities, rupturing via surface diffusion far below their melting points. This behavior constrains thermal budgets for advanced integrated circuits and emerging 2D-crystal devices. Here, we demonstrate that these instabilities can be fundamentally suppressed using graphene as a van der Waals (vdW) template. While conventional 20-nm-thick gold films break up into islands below 300 {\textdegree}C, templated films not only remain stable but also become structurally refined after annealing above 600 {\textdegree}C. This exceptional stability stems from a vdW-mediated crystallographic texture that reorganizes grain boundaries into a mechanically robust network. This mechanism significantly widens the processing window for nanoscale interconnects and enables high-temperature integration of metals with 2D-crystal technologies. |
| title | Suppressed Rupture of Thin Metal Films via van der Waals Epitaxy |
| topic | Soft Condensed Matter Applied Physics |
| url | https://arxiv.org/abs/2602.19827 |