Direct measurement of osmotic pressure via adaptive confinement of quasi hard disc colloids

by Ian Williams, Erdal C Oguz, Paul Bartlett, Hartmut Lowen and C Patrick Royall

Confinement is encountered in systems varying from simple liquids to biological cells.

Williams et al. introduce a novel adaptive confinement with an elastic wall comprised of colloidal particles, whereby the osmotic pressure of the confined system can be directly obtained from the displacement of the wall.

Nature Communications, 2nd October. DOI 10.1038/ncomms3555.