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Veritasium · 发布于 2019年1月25日
Droplets levitate on a bath of liquid nitrogen and are spontaneously self-propelled. Thanks Audible! Start a 30-day trial and your first audiobook is free. Go to https://audible.com/VERITASIUM or text VERITASIUM to 500500. Special thanks to Dr. Anaïs Gauthier Physics of Fluids: https://pof.tnw.utwente.nl/ Self-propulsion of inverse Leidenfrost drops on a cryogenic bath Anaïs Gauthier, Christian Diddens, Rémi Proville, Detlef Lohse, and Devaraj van der Meer PNAS January 22, 2019 116 (4) 1174-1179; published ahead of print January 22, 2019 https://www.pnas.org/content/116/4/1174 For a detailed description of the setup: http://www.lps.ens.fr/~adda/papiers/Langmuir2016.pdf And self-propulsion is also seen: http://www.lps.ens.fr/~adda/papiers/InvLeidenfrost.avi Other recent (hot) Leidenfrost experiments that might be interesting: * Leidenfrost wheels: https://www.youtube.com/watch?v=glRGl-eYuXo * Leidenfrost maze: https://www.youtube.com/watch?time_continue=174&v=vPZ7sx3EwUY * Leidenfrost explosions: https://www.youtube.com/watch?v=z0sp3AjgUy4 Special thanks to Patreon supporters: Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd Thanks to Prof. Kevin McKeegan at UCLA for the liquid nitrogen Filming by Raquel Nuno Additional animations by Alan Chamberlain
