| Mon September 14th 2015 16:00 – 17:00 ZH286 | Seminar | Evolution of Water-Air Interfaces on Submerged Surfaces with Microstructures Pengyu Lv |
Details:Superhydrophobicity on structured surfaces is frequently achieved via the maintenance of water-air interfaces adjacent to the trapped air pockets. These interfaces, however, are subject to instabilities due to the Cassie-Baxter-to-Wenzel transition and total wetting. The current work focuses on the evolution of water-air interfaces on submerged microstructures under three influence factors, namely, hydrostatic pressure, air diffusion and fluid flow. The variations of the positions and configurations of water-air interfaces are in situ examined in real time using the laser scan confocal microscopy. The whole evolution process of the liquid-air interfaces is presented experimentally and the basic mechanisms governing the evolution process are revealed. | ||
