Particle assembly on an evolving interface

The behavior of particles on fluid-fluid interfaces has a history extending back to Pickering. Much of the work on these particle rafts treats the fluid as a quasi-static interface and investigates the behavior of the particles on this passive interface. In this work, we investigate the behavior of particle rafts on dynamically evolving interfaces such that there is a strong coupling between the behavior of particles on the interface and the underlying hydrodynamics of the evolving interface. As a prototypical system, we consider a water-oil interface inside a funnel, such that the interface deforms as the water level is varied. We examine the behavior of a variety of particles on such an interface to elucidate the coupling between bulk and interfacial phenomena.