These Sound Waves Can Levitate and Move Particles in New Ways

Credit: Pete Linforth

(From Science News)

A new machine uses ultrasonic waves to make particles dance in midair like marionettes on (invisible) strings. . . .

This kind of levitation technology, described online the week of December 17 in Proceedings of the National Academy of Sciences, could assemble microelectronics or maneuver small objects inside the body for medical treatment.

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