  The impact of drops of concentrated non-Brownian suspensions (cornstarch and
polystyrene spheres) onto a solid surface is investigated experimentally. The
spreading dynamics and maxi- mal deformation of the droplet of such shear
thickening liquids are found to be markedly different from the impact of
Newtonian drops. A particularly striking observation is that the maximal de-
formation is independent of the drop velocity and that the deformation suddenly
stops during the impact phase. Both observations are due to the
shear-thickening rheology of the suspensions, as is theoretically explained
from a balance between the kinetic energy and the viscously-dissipated en-
ergy, from which we establish a scaling relation between drop maximal
deformation and rheological parameters of concentrated suspensions.
