(a) Schematic of spray cooling on 3D-ordered hierarchical micro/nano-structured surface. (b) Top-view SEM image of the structured surface. (c) Partial enlargement SEM image of the sidewall surface.

Physicists at the University of Liège have succeeded in sculpting the surface of water by exploiting surface tension. Using 3D printing of closely spaced spines, they have combined menisci to create ...