Precursor Film Length Ahead Droplet Traveling on Solid Substrate

The present authors carried out an experimental study with a special interest upon the dynamics of the fluid in the vicinity of the boundary lineof three phases; solid-liquid-gasin- terface, which is so-called 'contact line.' The moving droplet on the solid substrate is accom- panied with the movement of the boundary line of three phases; solid-liquid-gas interface, which is so-called macroscopic 'contact line.' Existing studies have indicated...