[3] His research has been concerned with a variety of fundamental problems in fluid motions dominated by viscosity,[4] so-called low Reynolds number flows, and has frequently featured a combination of theory, computer simulation and modeling, and experiments to provide a quantitative understanding of the flow phenomenon under investigation.

[5] He has made contributions to a wide range of problems involving effects of surface tension, buoyancy, fluid rotation, and surfactants.

He has also studied problems concerning the flow of lipid bilayers and monolayers, and has investigated the motions of particles suspended in such interfacial layers.

[5] Recent research has extended his study of fluid dynamics and flow within microchannels to biological applications as well.

Currently he also serves as an Academic Athletic Fellow for the Princeton University women's basketball team.