Abstract:   Liquid interfaces are perfectly smooth down to the molecular level, and may assume a variety of interesting and beautiful shapes. In this talk, the governing equation that describes the mechanics of liquid interfaces, Laplace-Capillary Pressure, will be derived from first principles. This equation will be discussed within the context of physical examples in order to develop an intuition for the characteristics of liquid interface contours. A derivation of the characteristic capillary length will also be performed, which will illustrate the utility of capillarity as a means for organizing objects at the micro and nano scale. Lastly, a microscale fabrication technique will be presented, which utilizes capillarity to arrange micron-sized particles into 3-dimensional structures with controlled shapes. Experimental results will be shown and discussed.

Speaker:  Justin Beroz
Institution:  University of Michigan

Date: December 05, 2012