ABB Ltd, the Swiss multinational operating mainly in robotics and the power and automation-technology sectors, said it is planning a rapid expansion in China.
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.