Figure 3:
Mean of Broadband Emission Power Spectra (MBEPS) from sonication with and without PSNE as a function of the pressure amplitude. The green bracket indicates the pressure range that MBEPS of non-diluted PSNE (5.2 ± 1.4 × 109 particles/ml) was significantly higher than for sonication without PSNE. After 1.25 MPa, sonications with non-diluted PSNE created significant higher MBEPS — a measurement of acoustic emission — than the sonication without PSNE. MBEPS of ×5 diluted PSNE (1.0 ± 0.3 × 109 particles/ml) has no significant difference with that obtained without PSNE control indicating a lack of PSNE-nucleated inertial cavitation. (Mean ± standard deviation shown, N=4 for the two PSNE groups. N=8 for controls; *P < 0.05).