Blue -- Collapsed phase

Red -- Swollen phase

Simulation of a hydrogel with an initially perturbed interface, the gel is partially swollen at the beginning of the simulation. The gel is placed in a reservoir in which the chemical potential is constant and lower than that in the specimen. The surface tension on the interface is constant throughout the simulation.

Simulation of a hydrogel with a initially circular interface. The interface evolves non-uniformly due to a periodic surface tension on the interface.