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URN to cite this document: urn:nbn:de:bvb:703-epub-7084-3
Title data
Eckert, Tobias ; Schmidt, Matthias ; de las Heras, Daniel:
Sedimentation path theory for mass-polydisperse colloidal systems.
In: The Journal of Chemical Physics.
Vol. 157
(2022)
Issue 23
.
- No. 234901.
ISSN 0021-9606
DOI der Verlagsversion: https://doi.org/10.1063/5.0129916
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Project information
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Deutsche Forschungsgemeinschaft |
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Abstract
Both polydispersity and the presence of a gravitational field are inherent to essentially any colloidal experiment. While several theoretical works have focused on the effect of polydispersity on the bulk phase behavior of a colloidal system, little is known about the effect of a gravitational field on a polydisperse colloidal suspension. We extend here the sedimentation path theory to study sedimentation–diffusion–equilibrium of a mass-polydisperse colloidal system: the particles possess different buoyant masses but they are otherwise identical. The model helps to understand the interplay between gravity and polydispersity on sedimentation experiments. Since the theory can be applied to any parent distribution of buoyant masses, it can also be used to study the sedimentation of monodisperse colloidal systems. We find that mass-polydispersity has a strong influence in colloidal systems near density matching for which the bare density of the colloidal particles equals the solvent density. To illustrate the theory, we study crystallization in sedimentation–diffusion–equilibrium of a suspension of mass-polydisperse hard spheres.
Further data
| Item Type: | Article in a journal |
|---|---|
| DDC Subjects: | 500 Science > 530 Physics |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics II > Chair Theoretical Physics II - Univ.-Prof. Dr. Matthias Schmidt Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics II |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-7084-3 |
| Date Deposited: | 12 Jul 2023 06:53 |
| Last Modified: | 12 Jul 2023 06:53 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/7084 |
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