Solid-State Dewetting of Polycrystalline Thin Films: a Phase Field Approach
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908849183653888 |
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| author | Hoffrogge, Paul Becker, Nils Schneider, Daniel Nestler, Britta Voigt, Axel Salvalaglio, Marco |
| author_facet | Hoffrogge, Paul Becker, Nils Schneider, Daniel Nestler, Britta Voigt, Axel Salvalaglio, Marco |
| contents | Solid-state dewetting is the process by which thin solid films break up and retract on a substrate, forming nanostructures. While dewetting of single-crystalline films is understood as a surface-energy-driven process mediated by surface diffusion, polycrystalline films exhibit additional complexity due to the presence of grain boundaries. Most theoretical and computational studies have focused on single-crystalline dewetting. Here, we present the application of the grandpotential multi-phase-field model to the dewetting of thin polycrystalline films in three dimensions, reproducing the key phenomenology of this process. By considering isotropic interface/surface energy, we illustrate its consistency with predictions based on energetic arguments and the morphological evolution towards equilibrium. We also provide novel analytical criteria for the onset of three-dimensional dewetting, serving as fundamental theoretical benchmarks, and highlight the critical role of triple junctions. Moreover, we unveil the dewetting behavior of polycrystalline patches, extending the scenarios of their single-crystalline counterparts. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_10811 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Solid-State Dewetting of Polycrystalline Thin Films: a Phase Field Approach Hoffrogge, Paul Becker, Nils Schneider, Daniel Nestler, Britta Voigt, Axel Salvalaglio, Marco Materials Science Computational Physics Solid-state dewetting is the process by which thin solid films break up and retract on a substrate, forming nanostructures. While dewetting of single-crystalline films is understood as a surface-energy-driven process mediated by surface diffusion, polycrystalline films exhibit additional complexity due to the presence of grain boundaries. Most theoretical and computational studies have focused on single-crystalline dewetting. Here, we present the application of the grandpotential multi-phase-field model to the dewetting of thin polycrystalline films in three dimensions, reproducing the key phenomenology of this process. By considering isotropic interface/surface energy, we illustrate its consistency with predictions based on energetic arguments and the morphological evolution towards equilibrium. We also provide novel analytical criteria for the onset of three-dimensional dewetting, serving as fundamental theoretical benchmarks, and highlight the critical role of triple junctions. Moreover, we unveil the dewetting behavior of polycrystalline patches, extending the scenarios of their single-crystalline counterparts. |
| title | Solid-State Dewetting of Polycrystalline Thin Films: a Phase Field Approach |
| topic | Materials Science Computational Physics |
| url | https://arxiv.org/abs/2507.10811 |