Wetting ridges on slippery liquid-infused porous surfaces

Slippery liquid-infused porous surfaces (SLIPS) show remarkable liquid repellency, making them useful for many coating applications. The outstanding repellency of SLIPS comes from a lubricant layer stabilized within and at the surface of a porous template. The stability of this lubricant layer is ke...

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Bibliographic Details
Published in:Reports on progress in physics 2023-05, Vol.86 (6), p.66601
Main Authors: Tran, Hong-Huy, Lee, Daeyeon, Riassetto, David
Format: Article
Language:English
Subjects:
anti-fouling
Engineering Sciences
liquid-repellent coatings
lubricant depletion
Materials
moving droplet
SLIPS
structured liquid surfaces
wetting
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Summary:Slippery liquid-infused porous surfaces (SLIPS) show remarkable liquid repellency, making them useful for many coating applications. The outstanding repellency of SLIPS comes from a lubricant layer stabilized within and at the surface of a porous template. The stability of this lubricant layer is key for SLIPS to exhibit their unique functionality. The lubricant layer, however, is depleted over time, causing degradation of liquid repellency. The formation of wetting ridges surrounding liquid droplets on the surface of SLIPS is one of the primary sources of lubricant depletion. Here, we present the fundamental understanding and characteristics of wetting ridges and highlight the latest developments that enable the detailed investigation and suppression of wetting ridge formation on SLIPS. In addition, we offer our perspectives on new and exciting directions for SLIPS.
ISSN:0034-4885
1361-6633
DOI:10.1088/1361-6633/acc87a