A quick intro to the Physics of Wetting

Water forms droplets on the surface of a leaf but it spreads and completely wets the skin of a snail. Why does water behave so differently on the two surfaces? In this video, we introduce the fundamental concepts of surface tension, contact angle and the difference between hydrophobic and hydrophilic materials. Also, we illustrate with examples how the physics of wetting helps understand biological features in cells!

Prepared by Mariona Esquerda Ciutat from the Hyman and Jülicher labs in Dresden.