Why are scientists now more excited about sound levitation than they had been previously?
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Sound levitation was previously only a theory and has only now been done experimentally.

By using sound levitation at the right frequency, scientists can break objects like glass.

The cost of sound levitation has decreased dramatically over the past decade.

Research has shown scientists can control the movement of liquids with sound without touching the liquid

Acoustic tractor beams use the power of sound to hold particles in mid-air, and unlike magnetic levitation, they can grab most solids or liquids even small insects. For the first time engineers have shown it is possible to stably trap objects larger than the wavelength of sound in an acoustic tractor beam. This discovery could enable the manipulation of drug capsules or micro-surgical implements within the body. The discovery could even lead to levitating humans.

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