超音波によるマイクロ気泡の制御(S25-3 気泡力学に関する基礎解析とその応用(3),S25 気泡力学に関する基礎解析とその応用)  [in Japanese] Dynamic behavior of micro-bubbles in ultrasonic field  [in Japanese]

When cavitation bubbles collapse violently, local high-temperature high-pressure spots are generated, which can be used for various chemical reactions, i.e., sonochemistry. It is necessary to control a sound field in order to generate these spots efficiently. We report two experimental studies: (1) Observation of a single bubble dynamics in ultrasonic field using a stroboscope and light scattering technique. (2) Amplitude and frequency dependence of the reaction rate of a model chemical reaction with multi bubble conditions.