Self-compensating liquid repellent surfaces with stratified morphology
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
Artificial liquid repellent surfaces have recently attracted vast scientific attention; however, achieving mechanical robustness remains a formidable challenge before industrialization can be realized. To this end, inspired by plateaus in geological landscapes, a self-compensating strategy is developed to pave the way for the synthesis of durable repellent surfaces. This self-compensating surface comprises tall hydrophobic structural elements, which can repel liquid droplets. When these elements are damaged, they expose shorter structural elements that also suspend the droplets and thus preserve interfacial repellency. An example of this plateau-inspired stratified surface was created by 3D direct laser lithography micro-nano fabrication. Even after being subjected to serious frictional damage, it maintained static repellency to water with a contact angle above 147 and was simultaneously able to endure high pressures arising from droplet impacts. Extending the scope of nature-inspired functional surfaces from conventional biomimetics to geological landscapes, this works demonstrates that the plateau-inspired self-compensating strategy can provide an unprecedented level of robustness in terms of sustained liquid repellency.
Date Issued
2019-12-31
Date Acceptance
2019-12-01
Citation
ACS Applied Materials and Interfaces, 2019, 12 (3), pp.4174-4182
ISSN
1944-8244
Publisher
American Chemical Society
Start Page
4174
End Page
4182
Journal / Book Title
ACS Applied Materials and Interfaces
Volume
12
Issue
3
Copyright Statement
© 2019 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials and Interfaces, after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsami.9b22896
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://pubs.acs.org/doi/10.1021/acsami.9b22896
Grant Number
EP/N025954/1
Subjects
Science & Technology
Technology
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Science & Technology - Other Topics
Materials Science
artificial surface
3D laser lithography
liquid repellency
mechanical robustness
friction
LASER
ANTIREFLECTION
WEAR
3D laser lithography
artificial surface
friction
liquid repellency
mechanical robustness
03 Chemical Sciences
09 Engineering
Nanoscience & Nanotechnology
Publication Status
Published
Article Number
acsami.9b22896
Date Publish Online
2019-12-31