Refining interface stress measurement in nanomultilayers through layer corrugation and interface roughness corrections
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917906806210560 |
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| author | Hu, Yang Druzhinin, Aleksandr Cancellieri, Claudia Turlo, Vladyslav |
| author_facet | Hu, Yang Druzhinin, Aleksandr Cancellieri, Claudia Turlo, Vladyslav |
| contents | We introduce new models that incorporate layer corrugation and interface roughness into standard approaches for measuring interface stress in nanomultilayers (NMLs). Applied to Cu/W NMLs, these models show that ignoring such features can inflate measured interface stress by up to 0.4 J/m^2. However, corrugation and roughness alone cannot account for the extreme stresses reported, suggesting that atomic-scale phenomena (e.g., intermixing and metastable phase formation at the interfaces) dominate. These findings highlight the importance of balancing bilayer counts and thickness-to-roughness ratios for reliable stress quantification, providing a practical pathway to designing and characterizing advanced nanocomposite coatings with improved accuracy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_18247 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Refining interface stress measurement in nanomultilayers through layer corrugation and interface roughness corrections Hu, Yang Druzhinin, Aleksandr Cancellieri, Claudia Turlo, Vladyslav Materials Science Computational Physics We introduce new models that incorporate layer corrugation and interface roughness into standard approaches for measuring interface stress in nanomultilayers (NMLs). Applied to Cu/W NMLs, these models show that ignoring such features can inflate measured interface stress by up to 0.4 J/m^2. However, corrugation and roughness alone cannot account for the extreme stresses reported, suggesting that atomic-scale phenomena (e.g., intermixing and metastable phase formation at the interfaces) dominate. These findings highlight the importance of balancing bilayer counts and thickness-to-roughness ratios for reliable stress quantification, providing a practical pathway to designing and characterizing advanced nanocomposite coatings with improved accuracy. |
| title | Refining interface stress measurement in nanomultilayers through layer corrugation and interface roughness corrections |
| topic | Materials Science Computational Physics |
| url | https://arxiv.org/abs/2501.18247 |