Coatings superrepellent to ultralow surface tension liquids

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Title: Coatings superrepellent to ultralow surface tension liquids
Author(s): Pan, S
Guo, R
Bjornmalm, A
Richardson, JJ
Li, L
Peng, C
Bertleff-Zieschang, N
Xu, W
Jiang, J
Caruso, F
Item Type: Journal Article
Abstract: High-performance coatings that durably and fully repel liquids are of interest for fundamental research and practical applications. Such coatings should allow for droplet beading, roll off and bouncing, which is difficult to achieve for ultralow surface tension liquids. Here we report a bottom-up approach to prepare super-repellent coatings using a mixture of fluorosilanes and cyanoacrylate. On application to surfaces, the coatings assemble into thin films of locally multi-re-entrant hierarchical structures with very low surface energies. The resulting materials are super-repellent to solvents, acids and bases, polymer solutions and ultralow surface tension liquids, characterized by ultrahigh liquid contact angles (>150°) and negligible roll-off angles (~0°). Furthermore, the coatings are transparent, durable and demonstrate universal liquid bouncing, tailored responsiveness and anti-freezing properties, and are thus a promising alternative to existing synthetic super-repellent coatings.
Publication Date: 15-Oct-2018
Date of Acceptance: 29-Aug-2018
ISSN: 1476-1122
Publisher: Nature Publishing Group
Start Page: 1040
End Page: 1047
Journal / Book Title: Nature Materials
Volume: 17
Sponsor/Funder: European Commission
Funder's Grant Number: 745676
Copyright Statement: © 2018 Springer Nature Limited. All rights reserved.
Keywords: MD Multidisciplinary
Nanoscience & Nanotechnology
Publication Status: Published
Embargo Date: 2019-04-15
Appears in Collections:Faculty of Engineering

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