Synthetic mini-motor: Researchers convert chemical energy into rotational energy at the supramolecular level

https://phys.org/news/2024-09-synthetic-mini-motor-chemical-energy.html

"peptide ribbons few μm long, few nm wide... with addition of fuel ribbons curl up into small tubes, causing them to begin to rotate. ... fuel amount added controls rotation speed, rotation direction influenced by ribbons' molecular building block structure... can move micrometer-sized objects... micro-walkers: several rotating ribbons brought together at central point can crawl along surfaces... future: swim through blood vessels detecting tumor cells, transporting drugs (after harmless fuel developed)"