Periodic Precipitation in a Confined Liquid Layer.
| Autor: | Itatani M; Department of Physics, Institute of Physics, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest H-1111, Hungary., Onishi Y; Graduate School of Advanced Mathematical Sciences, Meiji University, 4-21-1 Nakano, Tokyo 164-8525, Japan., Suematsu NJ; Graduate School of Advanced Mathematical Sciences, Meiji University, 4-21-1 Nakano, Tokyo 164-8525, Japan.; Meiji Institute for Advanced Study of Mathematical Sciences (MIMS), Meiji University, 4-21-1 Nakano, Tokyo 164-8525, Japan., Lagzi I; Department of Physics, Institute of Physics, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest H-1111, Hungary.; HU-REN-BME Condensed Matter Physics Research Group, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest H-1111, Hungary. |
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| Jazyk: | angličtina |
| Zdroj: | The journal of physical chemistry letters [J Phys Chem Lett] 2024 May 09; Vol. 15 (18), pp. 4948-4957. Date of Electronic Publication: 2024 Apr 30. |
| DOI: | 10.1021/acs.jpclett.4c00832 |
| Abstrakt: | Pattern formation is a ubiquitous phenomenon in animate and inanimate systems generated by mass transport and reaction of chemical species. The Liesegang phenomenon is a self-organized periodic precipitation pattern always studied in porous media such as hydrogels and aerogels for over a century. The primary consideration of applying the porous media is to prevent the disintegration of the precipitation structures due to the sedimentation of the precipitate and induced fluid flow. Here, we show that the periodic precipitation patterns can be engineered using a Hele-Shaw cell in a confined liquid phase, restricting hydrodynamic instability. The patterns generated in several precipitation reaction systems exhibit spatiotemporal properties consistent with patterns obtained in solid hydrogels. Furthermore, analysis considering the Rayleigh-Darcy number emphasizes the crucial role of fluidity in generating periodic precipitation structures in a thin liquid film. This exploration promises breakthroughs at the intersection of fundamental understanding and practical applications. |
| Databáze: | MEDLINE |
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