Metal Assisted Chemical Etching patterns at a Ge/Cr/Au interface modulated by the Euler instability
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866916266927718400 |
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| author | Wong, Yilin Zocchi, Giovanni |
| author_facet | Wong, Yilin Zocchi, Giovanni |
| contents | We present a solid state system which spontaneously generates remarkable engraving patterns on the surface of Ge. The layered construction, with a metal film on the Ge surface, results in coupling of the metal catalyzed etching reaction with the long range stress field at the Ge - metal interface. The etching patterns generated have similarities with Turing patterns, hydrodynamic patterns, crack propagation, and biological form. We describe spirals, radial patterns, and more disordered structures. Euler buckling of the metal layer generates a characteristic wavelength for some patterns. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_20544 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Metal Assisted Chemical Etching patterns at a Ge/Cr/Au interface modulated by the Euler instability Wong, Yilin Zocchi, Giovanni Materials Science Mesoscale and Nanoscale Physics Pattern Formation and Solitons We present a solid state system which spontaneously generates remarkable engraving patterns on the surface of Ge. The layered construction, with a metal film on the Ge surface, results in coupling of the metal catalyzed etching reaction with the long range stress field at the Ge - metal interface. The etching patterns generated have similarities with Turing patterns, hydrodynamic patterns, crack propagation, and biological form. We describe spirals, radial patterns, and more disordered structures. Euler buckling of the metal layer generates a characteristic wavelength for some patterns. |
| title | Metal Assisted Chemical Etching patterns at a Ge/Cr/Au interface modulated by the Euler instability |
| topic | Materials Science Mesoscale and Nanoscale Physics Pattern Formation and Solitons |
| url | https://arxiv.org/abs/2405.20544 |