Leafy inspiration: this artificial surface with 3D ratchet structures enables liquids of different surface tension to move in different directions. It was inspired by Araucaria leaves, which are also ...

Researchers from the University of Washington want to improve the pipe. Specifically, they are developing a flexible pipe with an interior helical structure that makes fluid flow one way and not the ...

Figure 1: Wave fields and surface flows produced by the cylindrical wave maker. Figure 2: Characteristics of the wave-driven inward and outward jets. Although the mean flow is driven by waves, which ...