Impact dynamics of a viscous drop containing a particle

When a particle is attached under liquid drop by surface tension, it forms solid–liquid compound drop. We investigate experimentally the impact dynamics of this onto solid surface. After impact, rebounds from and rises through The can either remain in deposited at low velocities or separate above critical velocity. demonstrate here that as viscosity increases, separation threshold transitions capillary threshold, characterized Weber number, to viscous captured Stokes number. However, still below limit if shifted away axis symmetry before This shifting observed large falling heights, where destabilized air drag. In addition, we show also induce an inclination vertical jetting, with tangent its angle proportional distance particle. Finally, confirm focusing mechanism responsible for jetting combining observations two synchronized cameras, side view bottom view.