Published on Jan 27, 2015
If the drop falls too slowly, it is absorbed; too fast, and it splatters without the bubbles emerging. “The sweet spot has to do with the velocity of the droplet and the qualities of the soil,” said Cullen R. Buie, an assistant professor of mechanical engineering. He and a postdoctoral researcher, Youngsoo Joung, reported on their work in Nature Communications. Produced by: David Frank and James Gorman