Porous anodic alumina (PAA) films are formed by electrochemical oxidation of aluminium in acidic solutions 1. Since 1995, when Masuda and Fukuda demonstrated formation of films with self-organized ...
Going down: a droplet of honey in a superhydrophobic coated tube. (Courtesy: Aalto University) Honey and other highly viscous fluids can flow faster than water in specially coated capillary tubes.
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