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. 2017 Sep 8;3(9):e1701558. doi: 10.1126/sciadv.1701558

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Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 1 — Snapshots from movie S2 showing (A and B) the formation of a gas cavity around a hot 20-mm Leidenfrost steel sphere at sphere temperature T_S = 400°C as it enters a 2-m-tall tank containing water at 95°C and (C and D) the development and trajectory of the sphere-in-cavity structure at the indicated depths and times after entry. (E) A close-up of the steady-state gas cavity of length L and maximum diameter D formed around the 20-mm Leidenfrost steel sphere at T_S = 400°C in 95°C water. (F) The steady-state gas cavity formed around a cold 20-mm superhydrophobic steel sphere at T_S = 21°C in 21°C water.