Finally, after overcoming the viscous and liquid-air surface tension barriers, the ejected drop impacts on a substrate. On impact, the drop can either remain as a single isolated spread drop or get splashed on the substrate. The threshold for the onset of splashing is given by the following dimensionless set of variables: 50 𝑂ℎ𝑅𝑒 5 = 𝑓(𝑅)