EPFL’s 150-Microgram Flyers Rise on Ultrasound Alone, No Motor Needed
Engineers at EPFL, the École Polytechnique Fédérale de Lausanne, have sent two microscopic vehicles into the air without a motor, a battery, a wire or a single electronic component on board. The craft weigh 150 and 184 micrograms and consist of nothing more than hollow polymer shells, printed in one piece, that lift off when … Read more