Figure 3
From: Dynamics of levitated objects in acoustic vortex fields
Simulation of the acoustic radiation force on a rigid sphere in acoustic vortex field. Results are for the 4-transducer arrangement and a rigid sphere of radius 1.5 mm. (a) Effect of device dimension, R, on the vertical component of acoustic radiation force obtained by respectively integrating acoustic radiation pressure over the top (z > 0) hemisphere (F t) and bottom (z < 0) hemisphere (F b) of a rigid sphere located at (0,0,0). Using R = 0.92λ, the insert shows the distribution of the normalized Gor’kov potential in the x-z plane. (b) z-component of the total force on the sphere as a function of location on the z-axis. (c) The x-component of force on the sphere as a function of location on the x-direction. (d) The x-component force on the sphere as a function of location on the line (0.1λ,0,z).
