Abstract
Field mapping of the acoustic radiation force and acoustic streaming is important for the design and calibration of acoustic tweezers, but we lack a method to disentangle and obtain accurate pictures of these fields. This study proposes a technique for multiradius microparticle image velocimetry, to solve this problem. The method requires no special assumptions about the driving acoustic field, and motorized scanning is unnecessary. This approach should impact various technologies for particle manipulation, including those exploiting acoustic, optical, dielectrophoretic, and magnetic forces.
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