My current research activities revolve around modeling the effect of disorder on transport and breakdown properties of materials. Various important engineering materials such as concrete, composites, rocks, paper, metal foams, etc. are inherently disordered. Moreover, even weak disorder in the system can be of key importance when dealing with small enough length or time scales. We use simple models to understand the connection between the disorder and the emergent system behavior.
As a part of the recently established NSF center for Novel High Voltage/Temperature Materials and Structures, we are also studying electrical conductivity of polymer nano-composites.