| Jamming in sedimented colloids |
| I am interested in the connection between hard sphere colloidal dispersions and other non-equilibrium systems at or near their jamming transition. There has been a great deal of interest in recent years in figuring out how systems of particles jam. Many types of systems share a fundamental connection in they way they approach a glass/jamming transition. One question that I would like to answer involves the existence of structures which lead to increased rigidity when colloids are uniaxially stressed. |
| Clogging of porous media |
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Another area of interest is understanding how porous media can become clogged by the inclusion of small particles at low volume fraction. We utilize microfluidic devices that are designed to mimic a number of different geometries that may be considered a porous material. |
| Rheology of structured fluids |
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One project of interest is the rheological behavior of high concentration surfactants that have been structured with rod-like materials. This project was done in collaboration with Pat Spicer at Proctor and Gamble. |
| Thin crumpled sheets |
| Below is an example of how a crumpled piece of paper looks after it has been "un-crumpled". We have published results that demonstrate a number of unique results in these types of systems. |
| Granular materials: |
| Over the past few years I have been working on trying to understand the dynamics and statics of granular materials. What would seem to be very simple systems actually pose very difficult questions to both physicists and engineers. Follow the links on the images below to find out more. |
Publication List
| Granular Materials: |
| Crumpled Sheets |
| Colloidal Physics |