Robuta

https://www.nist.gov/news-events/news/2014/07/nist-shows-ultrasonically-propelled-nanorods-spin-dizzyingly-fast NIST Shows Ultrasonically Propelled Nanorods Spin Dizzyingly Fast | NIST Feb 3, 2025 - Vibrate a solution of rod-shaped metal nanoparticles in water with ultrasound and they'll spin around their long axes like tiny drill bits. Why? nistshowspropellednanorodsspin