In this video, some scientists at Clemson University manage not only to levitate a water droplet using sound, but manipulate its shape—and the results are really cool.
By introducing the droplet into a pressure field created by a sound-producing transducer and a reflector that bounces the sound back, they get the now-flattened droplet to suspend itself in midair. Changing the sound issuing from the transducer causes the droplet to contort itself into varying shapes.
Sometimes science is just nice to look at.
Source: Watch This Levitating Water Droplet Contort Itself Into Different Shapes – VICE