Dr. Dmitri Kopeliovich Acoustic waves of ultrasonic frequencies
(16 kHz to 2 MHz) are used for materials processing . Parameters
of ultrasonic processing (amplitude, frequency, power) are well
controlled. Ultrasonic processing of Fluids employs the
phenomenon of acoustic cavitation. Acoustic cavitation is the
formation of bubbles (cavities) in a liquid as a result of a
rapid drop of the liquid pressure caused by a sound wave passing
through the liquid. Ultrasonic processing of solids utilizes the
effect of the high frequency mechanical vibration producing
friction and abrasion actions. Ultrasonic homogenizing is a
technique of dispersions processing, which utilizes ultrasonic
waves for homogeneous distribution of the dispersed phase by the
following actions: reducing the sizes of the dispersed
particles/droplets (breaking); disintegrating the dispersed
particles agglomerates; blending the dispersed phase in the
liquid. Ultrasonic homogenizing is a result of acoustic
cavitation. The cavitation bubbles form at