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 Na...

Source: [Phys.org](https://phys.org/news/2026-07-surface-vortices-tiny-rotors-electricity.html)

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