Laser Impact on a Drop
Alexander L. Klein, Wilco Bouwhuis, Claas Willem Visser, Henri Lhuissier, Chao Sun, Jacco H. Snoeijer, Emmanuel Villermaux, Detlef Lohse, Hanneke Gelderblom
University of Twente, The Netherlands
In this video we show that the response of a liquid drop to the impact of a nanosecond laser-pulse is violent: the drop gets strongly deformed and propelled forward at several m/s, and subsequently breaks up or even explodes. Detailed understanding of this process is of key importance for the generation of extreme ultraviolet (EUV) light in the latest nanolithography machines. Here we recorded the drop’s response to various laser-impact conditions by high-speed imaging at 20 000 frames per second (FPS) and by stroboscopic illumination at an effective frame rate of 10 million FPS.
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