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Chuan-Hua Chen (Duke University), Applied Mathematics Colloquium
April 7 @ 4:00 pm - 5:00 pm
Title: Self-Propelled Jumping Drops: From Ballistospore Launching to Hotspot Cooling
Abstract: When two drops coalesce into one, the overall surface area is reduced and the released surface energy can be converted to kinetic energy, leading to self-propelled jumping motion of the merged drop. In this talk, we will first illustrate the physical mechanisms of the self-propelled motion by experimentally validated simulations. We will then discuss a few applications of the coalescence-induced motion in biology and engineering, including the launching mechanism of fungal ballistospores and the adaptive cooling of microelectronic hotspots.