Water-surface vortices drive tiny rotors without electricity, magnets or chemicals

AI Summary

Researchers from KIT and the Chinese Academy of Sciences demonstrated that water-surface flow can drive the rotation of tiny rotors without using electricity, magnets, or chemicals, opening new possibilities in controlled miniature rotation technologies.

Reliably generating controlled miniature rotations has long been a challenge: Chemical propulsion systems wear out, and methods that use electric or magnetic fields require complex setups. A team from KIT's Institute of Microstructure Technology (IMT) and the Suzhou Institute of Nano-tech and Nano-bionics (SINANO) at the Chinese Academy of Sciences has now demonstrated that flow at a water surface alone is sufficient to rotate a floating object in a fixed direction. Their research is published in the journal Science Advances.