Order Through Disorder: Entropy Driven Self-Assembly

When: Thursday, March 21, 2013 at 4:00 pm
Where: DA 114
Speaker: Professor Zvonimir Dogic
Organization: Brandeis University
Sponsor: Physics Colloqium

Although the idea that entropy alone is sufficient to produce an ordered state is an old one, the notion remains counter-intuitive and it is often assumed that attractive interactions are necessary to generate phases with long-range order. In this talk I will describe how to rationally design the shape of particles with repulsive interactions in order to assemble equilibrium structures of ever increasing complexity, ranging from conventional three-dimensional crystals and liquid crystals to more exotic structures such as one-dimensional twisted ribbons and two-dimensional fluid membranes. Simple argument demonstrates that all these structures maximize the overall entropy of the system.

Host: Assistant Professor Meni Wanunu
Exp Biophys