Confined colloidal droplets dry to form circular mazes
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| _version_ | 1866909516194381824 |
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| author | Beechey-Newman, Ilaria Kizilova, Natalya Hennig, Andreas Andersen Flekkøy, Eirik Grude Eiser, Erika |
| author_facet | Beechey-Newman, Ilaria Kizilova, Natalya Hennig, Andreas Andersen Flekkøy, Eirik Grude Eiser, Erika |
| contents | During drying, particle-laden sessile droplets will leave so-called coffee-stain rings behind. This phenomenon is well-known and well-understood (Deegan et al., Nature 389, 827-829 (1997)). Here we show that when particle-laden droplets confined in a slit are allowed to evaporate very slowly, they do not deposit coffee rings, but form a surprisingly intricate, circular maze-like pattern. We present experiments that illustrate this pattern formation and discuss the factors that determine when such patterns can form. We are not aware of reports of natural examples of the formation of such beautiful patterns under confinement, although it seems likely that they exist. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_19604 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Confined colloidal droplets dry to form circular mazes Beechey-Newman, Ilaria Kizilova, Natalya Hennig, Andreas Andersen Flekkøy, Eirik Grude Eiser, Erika Soft Condensed Matter During drying, particle-laden sessile droplets will leave so-called coffee-stain rings behind. This phenomenon is well-known and well-understood (Deegan et al., Nature 389, 827-829 (1997)). Here we show that when particle-laden droplets confined in a slit are allowed to evaporate very slowly, they do not deposit coffee rings, but form a surprisingly intricate, circular maze-like pattern. We present experiments that illustrate this pattern formation and discuss the factors that determine when such patterns can form. We are not aware of reports of natural examples of the formation of such beautiful patterns under confinement, although it seems likely that they exist. |
| title | Confined colloidal droplets dry to form circular mazes |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2502.19604 |