Table 2.
Threshold pressures for acoustic cavitation of water in the presence of silica nanoparticles.
| Particle concentration (1011 particles mL−1) | Particle concentration (4×1011 particles mL−1) | |||
|---|---|---|---|---|
| Threshold (MPa) | Description | Threshold (MPa) | Description | |
| MCM-41 | >22 | No response | >22 | No response |
| MCM-48S | >22 | No response | 9.1 | Weak response |
| MCM-48R | 6.2 | Strong response | 6.2 | Strong response |
| Dendritic | >22 | No response | >22 | No response |
| Random | >22 | No response | 6.2 | Response dies off quickly |
| Solid | >22 | No response | >22 | No response |