Results...er...

Just in case you missed my abstract, I'll repeat: I never actually obtained sonoluminesecence. Adjusing a number of parameters never seemed to yield any change in the behavior of the bubble and time contraints governed that I abandon the experiment.

I did find that the resonant frequency of the flask was around 27.54 kHz and that I needed at least 400mV at the voltage sense to get the buble to remain trapped. Unfortunately at this amplitude the bubble began to shrink. Water level greatly affected the amplitude of the output from the microphone, so tuning by adjusting the water level is necessary.

There were a number of places where I could have gone wrong that I think are worth mentioning:

€ The piezoelectric speakers could have been mounted improperly. Though they seemed almost aligned, that they were not completely tangent to the surface of the glass may have caused some problems. As I decreased the amplitude of the input wave the bubble began to drift upwards but remain trapped. This may have been an indication of the misalignment.

€The amplification could have been too strong. I was never able to keep the bubbles from collapsing entirely.

€The amplification may have been too weak: I was never able to get a 1 volt peak to peak from the voltage sense as the article claimed I should.

€I never was able to exactly match the resonant frequency of the flask and the RLC circuit due to a small choice of inductors.