Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 47, 2017
Previous Article Next Article

Van't Hoff's law for active suspensions: the role of the solvent chemical potential

Author affiliations

Abstract

We extend Van’t Hoff's law for the osmotic pressure to a suspension of active Brownian particles. The propelled particles exert a net reaction force on the solvent, and thereby either drive a measurable solvent flow from the connecting solvent reservoir through the semipermeable membrane, or increase the osmotic pressure and cause the suspension to rise to heights as large as micrometers for experimentally realized microswimmers described in the literature. The increase in osmotic pressure is caused by the background solvent being, in contrast to passive suspensions, no longer at the chemical potential of the solvent reservoir. The difference in solvent chemical potentials depends on the colloid–membrane interaction potential, which implies that the osmotic pressure is a state function of a state that itself is influenced by the membrane potential.

Graphical abstract: Van't Hoff's law for active suspensions: the role of the solvent chemical potential

Back to tab navigation

Supplementary files

Article information


Submitted
19 Jul 2017
Accepted
10 Nov 2017
First published
10 Nov 2017

Soft Matter, 2017,13, 8957-8963
Article type
Paper

Van't Hoff's law for active suspensions: the role of the solvent chemical potential

J. Rodenburg, M. Dijkstra and R. van Roij, Soft Matter, 2017, 13, 8957
DOI: 10.1039/C7SM01432E

Social activity

Search articles by author

Spotlight

Advertisements