Fig. 1

Acoustic intensity profile and equilibrium dialysis setup. a The acoustic intensity profiles across the longitudinal plane (top panel) measured 3 mm away from the exit plane of the transducer, and the transverse profile (bottom panel) at the focus indicated as a dotted black line (top panel). The full width at 90 %-maximum intensity is depicted with dotted white lines. b The experimental setting for the equilibrium dialysis, showing the dialysis chamber with rubber inserts (black pads). Dialysis cassettes at the focus (‘FF’) and outside the path of sonication (‘FO’) are shown with the illustrated sonication path