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Diagram shows the relative position of the tube wall, microbubble, and imaging plane: (a) parallel imaging plane and (b) normal imaging plane.
Oscillations of: (a) a free-floating microbubble, (b) an adherent microbubble in the parallel imaging plane, and (c) an adherent microbubble in the normal imaging plane. Subharmonic oscillation is shown in (d) for a free microbubble and in (e) for an adherent microbubble, both in the parallel imaging plane. The driving pulse was a three-cycle sinusoidal pulse at .
Streak image and frame images illustrating toroidal bubble shape during jet inception after compressional half-cycle.
Fragmentation of an adherent microbubble observed from: (a) normal imaging plane and (b) parallel imaging plane.
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