Experimental Study Of The Thermocapillary Rupture Dynamics Of Water And Ethanol Layers

Rupture dynamics of thin (500 mu m) horizontal liquid films of water and ethanol was experimentally investigated during non-uniform heating from the side of smooth substrate. On the same substrate under similar heating conditions, the propagation rate of a dry spot in a horizontal water film was found to be several orders of magnitude higher than the rate of propagation of a dry spot in an ethanol layer.