Abstract
Container-less processing could prevent the heterogeneous nucleation and contamination due to the container wall. Acoustic levitation is expected to be used in the field of the analytical chemistry and manufacturing new materials. Thus, it is important to understand the non-linear behavior of an acoustically levitated droplet. The purpose of the study is to experimentally investigate the interfacial behavior and translational motion of an acoustically levitated droplet. In this study, translation of the droplet with the different reflectors was recorded by high speed video camera and estimated quantitatively. As a result, it is shown that translational amplitude of droplet with concave reflector was drastically smaller than that with flat type because of the lower sound pressure gradient around the levitated droplet.
