(489c) Effects of Hydrodynamics on Self-Assembly of Nanoparticles

Self-assembly of nanoparticles has attracted increasing attention as a tool for constructing unique physicochemical properties of materials, associated with assembled configurations at larger scales, in addition to its fundamental scientific interests. Self-assembly results from a coupled interplay between energetics and dynamics. Energetics of self-assembly in terms of short- and long-range forces has been a primary focus in previous studies but its coupling to dynamics (i.e., hydrodynamics) has been relatively less studied despite its pivotal role for obtaining the mechanistic understanding of self-assembly. We will talk about a couple of cases where the importance of hydrodynamics on self-assembly can be clearly seen. Such cases will involve i) coupling between translational and rotational motions and ii) unique interfacial solution structure. Experiments with dynamic light scattering and in situ liquid cell transmission electron microscopy and relevant simple theories will be provided.