Title :
Theoretical analysis of cavitation enhancement by second-harmonic superimposition
Author :
Umemura, Shin-ichiro ; Kawabata, Ken-ichi ; Sasaki, Kazuaki
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
Recent in vitro and in vivo experiments have demonstrated that sonochemical reactions can be greatly accelerated when the second harmonic is superimposed on the ultrasonic field. The effect of second-harmonic superimposition on the rectified diffusion through the gas-liquid interface of cavitated micro bubbles is theoretically estimated. The theory approximately explains the dependence of the in vitro sonochemical reaction rate on the combination of the fundamental and the second-harmonic amplitudes
Keywords :
biological effects of acoustic radiation; bubbles; cavitation; harmonic generation; nonlinear acoustics; ultrasonic effects; 0.5 MHz; biological tissues; cavitated micro bubbles; cavitation enhancement; fundamental amplitudes; gas-liquid interface; in vitro experiments; in vitro sonochemical reaction rate; in vivo experiments; rectified diffusion; second-harmonic amplitudes; second-harmonic superimposition; sonochemical reactions; ultrasonic field; Acoustic frequency conversion; Acoustic radiation effects; Biological effects of acoustic radiation; Biological tissues; Frequency conversion;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401949
