Compact liquid metal droplet rotary paddle motor replaces rigid magnet, coil, gear, shaft components with fluid dynamics

https://techxplore.com/news/2026-01-liquid-metal-powers-kind-motor.html

"similar to miniature waterwheel but uses electricity/ liquid metal instead of mechanical force... submerge liquid metal droplet in salt solution, apply electric field triggering swirling internal flows within droplet, place small copper paddle inside flows pushing paddle up to 320 RPM... motor inherently soft/ adaptable... liquid metal actuator fast/ efficient... less mechanical complexity: easier integration into small-scale tech... delicate or confined environments: soft robotics, biomedical devices, flexible electronics, wearables"