This robot, which still doesn’t have a name, is very compact (which measures just 6.5 x 5.5 x 1 centimeter), and according to its creators it is quite possibly “the fastest legged robot of its size.”
Robots clean rivers and sort waste, monitor ecosystems, and inspect renewable-energy infrastructure. But even the greenest robot has an environmental footprint.
EPFL engineers have designed acoustic cavities that convert sound waves into thrust, propelling small robots and ultralight aerial vehicles without on-board actuators or electronics.