Fig. 3 Adhesion of water on two kinds of hot hydrophobic nanotexture.

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Fig. 3 Adhesion of water on two kinds of hot hydrophobic nanotexture. Adhesion of water on two kinds of hot hydrophobic nanotexture. (A) SEM (scanning electron microscopy) image of a Glaco-coated brass substrate. Hydrophobic nanobeads deposited on the substrate provide a submicrometric roughness. Scale bar, 500 nm. (B) SEM picture of a dense array of nanocones (height, 115 nm; spacing, 52 nm) textured in silicon and coated by fluorosilanes. Scale bar, 200 nm. The picture is adapted from the work of Checco et al. (25). (C) Contact angle hysteresis Δcosθ of a water drop (Ω = 3.9 μl) on Glaco coating (a, blue data) and on nanocones (b, red data) as a function of the substrate temperature T. Philippe Bourrianne et al. Sci Adv 2019;5:eaaw0304 Copyright © 2019 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).