Figure 8.
Expansion ratio of UCAs versus 1∕f. UCAs with a mean radius and thickness of the corresponding type are insonified by pulses with a PNP of 1.2 MPa and a center frequency from 600 kHz to 5 MHz: (a) GL=0 MPa, (b) GL=0.5 MPa, (c) GL=1.5 MPa.
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