Levich Institute Seminar Announcement, 08/30/2011
Steinman Hall, Room #312
(Chemical Engineering Conference Room)
Professor Anthony Dinsmore
University of Massachusetts
Department of Physics
"Liquid Interfaces and Solid Particles: From Simple Geometry to Novel Materials"
The interface between two liquids – as on the surface of a water droplet in oil – provides a versatile platform for assembly of small particles to make functional membranes, capsules, and other materials. Owing to the large interfacial tension, nanometer-to-micron-sized colloidal particles readily adsorb at the interface and become confined there. In this talk, I will describe recent studies of the binding of colloidal spheres at anisotropically curved liquid interfaces, where binding causes deformation of the interface and induces capillary interactions. I will also describe recent measurements of the binding energy of nanoparticles at liquid interfaces and the application of this approach to make functional electronic devices with microscopic liquid-metal droplets. These results provide new insight into capillary forces in general, especially the role of interface geometry. They also may help explain the stability of particle-stabilized (Pickering) emulsions and point the way to new methods of directed assembly of small particles.
BRIEF ACADEMIC/EMPLOYMENT HISTORY
RECENT RESEARCH INTERESTS: