  Slippery liquid-infused porous surfaces (SLIPS) are porous nanostructures
impregnated with a low surface tension lubricant. They have recently shown
great promise in various applications that require non-wettable
superhydrophobic surfaces. In this paper, we investigate experimentally the
influence of the oil thickness on the wetting properties and drop impact
dynamics of new SLIPS. By tuning the thickness of the oil layer deposited
through spin-coating, we show that a sufficiently thick layer of oil is
necessary to avoid dewetting spots on the porous nanostructure and thus
increasing the homogeneity of the liquid distribution. Drop impact on these
surfaces is investigated with a particular emphasis on the spreading and
rebound dynamics when varying the oil thickness and the Weber number.
