Variation of Suspending Particle Motion for Condition of Ultrasonic Standing Wave

Abstract

The purpose of this research is to control the particles motion in the ultrasonic standing wave. The results of simulation have been compared with experiment in order to examine the possibility of particles motion control in the air. Simulations have corresponded with experiments on acoustic pressure distribution and particle motion. However particle motion control was impossible in this experiment because radiation pressure acting on particle was poor and gravity force dominates. Then, simulation showed that the particle motion is changed if the sound pressure is increased. This means it is possible to control the particles motion by ultrasonic if high acoustic pressure is applied. Additionally particle can be collected by changing vibration mode even though maximum acoustic pressure is not changed.