  The impact of droplets on liquid pools is ubiquitous in nature and many
industrial applications. Most previous studies of droplet impact focus on
Newtonian fluids, while less attention has been paid to the impact dynamics of
non-Newtonian droplets, even though non-Newtonian fluids are widely used in
many applications. In this study, the splashing dynamics of shear-thinning
droplets with yield stress are studied by combined experiments and simulations.
The formation and the propagation of the ejecta sheet produced during the
splashing process are considered, and the velocity, the radius, and the time of
the ejecta sheet emergence are analyzed. The results show that the
non-Newtonian fluid properties significantly affect the splashing process. The
ejecta sheet of the splashing becomes easier to form as the flow index reduces,
the large yield stress can affect the thickness of the ejecta sheet, and the
spreading radius collapses into a geometrical radius due to that the inertia
force is the dominant factor in the ejecta sheet propagation.
