<p>➀ Researchers developed millimeter-sized robots powered by cavitation (bubble collapse energy), achieving jumps up to 1.5 meters high at 12+ m/s speeds using lasers or ultrasound;</p><p>➀ The robots, made of titanium dioxide and other materials, enable precise control for applications like non-invasive drug delivery and micro-assembly;</p><p>➂ While still experimental, the technology shows promise for industrial inspections and confined-space repairs by converting destructive cavitation into controllable propulsion.</p>