Droplet impact on surfaces is ubiquitous in many natural and industrial
processes. While the impact dynamics of droplets composed of simple fluids have
been studied extensively, droplets containing particles are less explored, but
are more application relevant. The non-Newtonian behavior of particle
suspension introduces new physics affecting the impact dynamics. Here, we
investigated the impact dynamics of droplets containing cornstarch particles on
a deep water pool and systematically characterized the impact outcomes with
various Weber number and particle volume fractions. Distinctive phenomena
compared to Newtonian droplet impact have been observed. A regime map of the
impact outcomes is unveiled and the transition boundaries are quantified with
scaling analysis. Rheology of the suspension is found to play a pivotal role in
giving rise to distinct impact outcomes. The results lay the foundation for
further characterization of the dynamics of suspension droplet impacting on
liquid surfaces and can be translated to other suspension fluids