Researchers at ETH Zurich have managed to make sound waves travel only in one direction. In the future, this method could also be used in technical applications with electromagnetic waves.
The U.S. research team used sound waves to levitate polyethylene particles of around 1mm in diameter to see how they interact with each other in 2D in groups of six or seven.
Researchers at Australia university were able to store light waves as sound waves on a microchip, which could bring us closer to light-based computers.
Researchers can create complex patterns in air and water using ultrasonic waves. By placing 3D printed plates in front of speakers, they can levitate water droplets and propel small objects.
