We are interested in a wide range of problems and actively look to collaborate with colleagues on new problems where we can add expertise.
Particle separation in microfluidic flows of xanthan gum solution (courtesy of X. Xuan) 
Mitochondria highlighting inner/outer biological membrane
Microfluidic flows of complex fluids
Microfluidic flows are affected by the rheology of the working fluid creating complex flow structures in the small-scale geometries of microchannels. Particle separation can be achieved through such flows in what can be referred to as a passive technique. We collaborate with X. Xuan (Clemson) on understanding such flows for non-Newtonian fluids.
Elastic membranes
The inner membrane of the mitochondria is an extreme mechanical structure characterized by highly nonlinear folds. To understand the morphology of the inner membrane, one needs to understand the relevant physics and forces that govern its shape. Of particular interest is the shape and stability during dehydration and rehydration and how fluid transport affects viability of the mitochondria.
Drops supported on a granular raft 
Particle entrainment during dip coating
Suspensions and granular matter
Particle-laden flows of small volume fraction are referred to as suspensions. We are interested in i) thin film and rotational instabilities of suspensions and ii) using classical dip coating flows for particle separation of suspensions in non-Newtonian fluids. Densely-packed particles may aggregate together and form granular rafts at a liquid/liquid interface and these rafts can support large liquid droplets, which undergo a morphological instability that leaves behind an armored drop. This process has environmental application in the cleanup of oil spills. We are also interested in collapse of granular columns as a means to study environmental flows like landslides, tsunamis, and icebergs.