(233b) Active Janus and Patchy Particles Near Boundaries

Janus particles, i.e., particles with two distinct halves, have been heralded as new materials for assembly, drug deliver, autonomous motion, and emulsion stabilization since deGennes’ 1991 Nobel lecture. Janus particles, i.e., particles with a 50% surface coating, are a specific subset of patchy particles, which can have any number of material patches on their surface. Our laboratory has spent the past 17 years developing methods to make a versatile set of Janus and patchy particles with magnetic, photonic, and catalytic properties and studying the behavior of such particles in electric and magnetic fields as well as at and near boundaries. In this talk, our research contributing to understanding the behavior of such particles in the vicinity of solid/liquid, liquid/liquid, and air/liquid interfaces will be discussed. Specifically, probing the impact of activity on the Janus particle/boundary interaction will be highlighted. Support for this work has been provided by the National Science Foundation CBET, HRD, and DMR as well as the Air Force Office of Scientific Research.