*堀 直樹1、Liu Hao-Ran1、Lohse Detlef1,2、Verzicco Roberto1,3,4(1. Physics of Fluids Group, Max Planck Center Twente for Complex Fluid Dynamics and J. M. Burgers Centre for Fluid Dynamics, University of Twente、2. Max Planck Institute for Dynamics and Self-Organization、3. Gran Sasso Science Institute、4. Dipartimento di Ingegneria Industriale, University of Rome)