A215 高速ビデオカメラを用いたMarangoni不安定によるクラウンの崩壊過程の観察

抄録

When a viscous drop impacts onto a thin film of ethanol on a solid surface, a lot of hole formations can be observed on the eject crown. The holes are caused by the Marangoni instabilities, which occur at a point where ethanol droplets contact at crown wall of viscous drop. The high-speed video camera, of which frame rate is a million frames per second, is employed for detailed observations.