A polystyrene particle in an acoustic trap that can levitate objects larger than the sound’s wavelength. Selected for a Synopsis in Physics.

From the article:

Acoustic Virtual Vortices with Tunable Orbital Angular Momentum for Trapping of Mie Particles
Asier Marzo, Mihai Caleap, and Bruce W. Drinkwater
Phys. Rev. Lett. 120, 044301 (2018)

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