Solid stabilized emulsions, also called Pickering emulsions, are oil water emulsions with interfaces stabilized by the adsoption of solid particles to the interface.  They have an array of industrial uses in cosmetics, crude oil recovery, waste water treatment, and more. 

In a Pickering emulsion, a solid particle must partially wet both liquid phases, thus finding a stable state resting at the interface.  Because of the particles, the interface exhibits new properties distinct from the properties of the 2 bulk phases.  The properties of the interface are a major factor in the final rheology of the bulk emulsion

In the Christopher lab, we are developing techniques to fabricate individual "Pickering Drops" with controlled surface coverage using microfluidic channels.  Once we can control the surface coverage of the particle, we will use microchannels to probe the interfacial rheology of the individual drops.  Using microfluidics minimizes the effects of the bulk flow, making this an ideal technique to examine surface properties.