Microscopic particles (household flour) spin in an acoustic vortex. This show the transfer of orbital angular momentum (OAM) from an acoustic vortex to matter. For full detail of the experiment see "Hong, Z., Zhang, J., & Drinkwater, B. W. (2015). Observation of Orbital Angular Momentum Transfer from Bessel-Shaped Acoustic Vortices to Diphasic Liquid-Microparticle Mixtures. Physical Review Letters, 114(21), 214301. doi:10.1103/PhysRevLett.114.214301"
