Physics Colloquium

"Non-Stick Water"

Presented by David Quere, College de France

Sunday, April 3, 2005, 3:30 pm — Large Seminar Room, Bldg. 510

While the behaviour of large amounts of liquid is dictated by gravity, surface forces become the dominant ones at small scales. They have for example the remarkable ability to make droplets stick to their substrates (even if they are inclined), which is a practical issue in many cases
(windshields, window panes, greenhouses, or microfluidic devices). Here we show how this problem can be overcome with super-hydrophobic materials. We describe a few ways to induce such situations, and present the (very) unusual dynamics of non-stick water.

Hosted by: Antonio Checco

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