EPub Bayreuth

Publications by the same author

in the repository

in Google Scholar

Bibliografische Daten exportieren

The phase stacking diagram of colloidal mixtures under gravity

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00004791
URN to cite this document: urn:nbn:de:bvb:703-epub-4791-9

Title data

de las Heras, Daniel ; Schmidt, Matthias:
The phase stacking diagram of colloidal mixtures under gravity.
In: Soft Matter. Vol. 9 (2013) Issue 36 . - pp. 8636-8641.
ISSN 1744-683X
DOI der Verlagsversion: https://doi.org/10.1039/c3sm51491a

Format:	PDF
Name:	c3sm51491a.pdf
Version:	Published Version
Available under License	German copyright law. This contribution is freely accessible with the consent of the copyright holder on the basis of an (DFG-funded) alliance or national license. The document may be used free of charge for personal use. In addition, the reproduction, editing, distribution and any kind of exploitation require the written consent of the respective rights holder.

Download (589kB)

Related URLs

Homepage author

Abstract

The observation of stacks of distinct layers in a colloidal or liquid mixture in the sedimentation-diffusion equilibrium is a striking consequence of bulk phase separation. Drawing quantitative conclusions about the phase diagram is, however, very delicate. Here we introduce the Legendre transform of the chemical potential representation of the bulk phase diagram to obtain a unique stacking diagram of all possible stacks under gravity. Simple bulk phase diagrams generically lead to complex stacking diagrams. We apply the theory to a binary hard core platelet mixture with only two-phase bulk coexistence, and find that the stacking diagram contains six types of stacks with up to four distinct layers. These results can be tested experimentally in colloidal platelet mixtures. In general, an extended Gibbs phase rule determines the maximum number of sedimented layers as a function of the number of binodals and their inflection points.

Further data

Item Type:	Article in a journal
Additional notes (visible to public):	ISI:000323483000003
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 Profile Fields > Advanced Fields > Polymer and Colloid Science 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 Profile Fields Profile Fields > Advanced Fields
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-4791-9
Date Deposited:	09 Sep 2020 05:27
Last Modified:	09 Sep 2020 05:27
URI:	https://epub.uni-bayreuth.de/id/eprint/4791

Download Statistics

Downloads

Downloads per month over past year