After more than a century, steel production in Pittsburgh is all but over, leaving in its wake industries based on higher education, health care, academic research, and robots. Lots of…
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.