Magnets move over: You may have a new challenger to the "levitation" throne.
GauntLev is a new tool from a group of UK-based researchers that uses sound to make small objects levitate.
Though the actual devices use a variety of formats, the basic idea is that two sound waves from opposing directions connect at a certain point. When that happens, the converging waves create lift from two directions, holding things in place.
Right now the device can only pick up small things like beads, but the idea is that this technology can later be used to manipulate things that are hard to handle such as hot, reactive, or fragile items (though nothing so fragile that it could shatter from sound waves).