Theory 02/Acoustofluidics
Cavitation Follows the Resonance Gap
The claim
Cavitation damage in acoustofluidic devices is set by the ratio of driving frequency to bubble resonance frequency rather than by power, so damage peaks at a frequency where the two coincide.
01The mechanism
A bubble grows when driven near its resonance; away from it, the same power produces stable oscillation instead of inertial collapse.
02Predictions
- P1Damage should peak at the resonance ratio.
- P2Equal power at other frequencies should be harmless.
03Refutation
Damage scaling with power alone would remove the resonance condition.