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. 2017 Nov 8;7:15078. doi: 10.1038/s41598-017-15287-8

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The superhydrophobic properties of Fluoropor are insensitive to abrasion. (a) Schematic illustration of Fluoropor abrasion-test: Fluoropor sample of thickness d [µm] is abraded by x [µm] by using sandpaper under a weight (0.74 kg). The superhydrophobic properties of the surface are retained due to its bulk porosity, while the transparency of the polymer suffers lightly (see photographic insets). Transparency is regained by polishing with a microfiber cloth. (b) Optical Transmission of the Fluoropor coating before abrasion, after abrasion of x~20 µm and after polishing. The optical transparency of the coating is fully regained after sandpaper abrasion and consecutive polishing. (c) Static contact angles of water on Fluoropor before abrasion, after abrasion and after polishing remain nearly constant, making the superhydrophobic properties of Fluoropor insensitive even to drastic abrasion of 20 µm layer thickness.