by Alexander B. Tesler, Heikki A. Nurmi, Stefan Kolle, Lucia H. Prado, Bhuvaneshwari Karunakaran, Anca Mazare, Ina Erceg, Íris De Brito Soares, George Sarau, Silke Christiansen, Shane Stafslien, Jack Alvarenga, Joanna Aizenberg, Ben Fabry, Robin H. A. Ras, Wolfgang H. Goldmann
Abstract:
Abstract Non-wettable surfaces, especially those capable of passively trapping air in rough protrusions, can provide surface resilience to the detrimental effects of wetting-related phenomena. However, the development of such superhydrophobic surfaces with a long-lasting entrapped air layer, called plastron, is hampered by the lack of evaluation criteria and methods that can unambiguously distinguish between stable and metastable Cassie-Baxter wetting regimes. The information to evaluate the stability of the wetting regime is missing from the commonly used contact angle goniometry. Therefore, it is necessary to determine which surface features can be used as a signature to identify thermodynamically stable plastron. Here, we describe a methodology for evaluating the thermodynamic underwater stability of the Cassie-Baxter wetting regime of superhydrophobic surfaces by measuring the surface roughness, solid-liquid area fraction, and Young’s contact angle. The method allowed the prediction of passive plastron stability for over one year of continuous submersion, the impeding of mussel and barnacle adhesion, and inhibition of metal corrosion in seawater. Such submersion-stable superhydrophobicity, in which water is repelled by a stable passive air layer trapped between the solid substrate and the surrounding liquid for extended periods at ambient conditions, opens new avenues for science and technologies that require continuous contact of solids with aqueous media.
Reference:
Alexander B. Tesler, Heikki A. Nurmi, Stefan Kolle, Lucia H. Prado, Bhuvaneshwari Karunakaran, Anca Mazare, Ina Erceg, Íris De Brito Soares, George Sarau, Silke Christiansen, Shane Stafslien, Jack Alvarenga, Joanna Aizenberg, Ben Fabry, Robin H. A. Ras, Wolfgang H. GoldmannPredicting plastron thermodynamic stability for underwater superhydrophobicityIn Communications Materials, volume 5, 2024.
Bibtex Entry:
@article{tesler_predicting_2024,
title = {Predicting plastron thermodynamic stability for underwater superhydrophobicity},
volume = {5},
issn = {2662-4443},
url = {Tesler 2024 Comm. Mat.pdf},
doi = {10.1038/s43246-024-00555-8},
abstract = {Abstract
Non-wettable surfaces, especially those capable of passively trapping air in rough protrusions, can provide surface resilience to the detrimental effects of wetting-related phenomena. However, the development of such superhydrophobic surfaces with a long-lasting entrapped air layer, called plastron, is hampered by the lack of evaluation criteria and methods that can unambiguously distinguish between stable and metastable Cassie-Baxter wetting regimes. The information to evaluate the stability of the wetting regime is missing from the commonly used contact angle goniometry. Therefore, it is necessary to determine which surface features can be used as a signature to identify thermodynamically stable plastron. Here, we describe a methodology for evaluating the thermodynamic underwater stability of the Cassie-Baxter wetting regime of superhydrophobic surfaces by measuring the surface roughness, solid-liquid area fraction, and Young’s contact angle. The method allowed the prediction of passive plastron stability for over one year of continuous submersion, the impeding of mussel and barnacle adhesion, and inhibition of metal corrosion in seawater. Such submersion-stable superhydrophobicity, in which water is repelled by a stable passive air layer trapped between the solid substrate and the surrounding liquid for extended periods at ambient conditions, opens new avenues for science and technologies that require continuous contact of solids with aqueous media.},
language = {en},
number = {1},
urldate = {2024-09-27},
journal = {Communications Materials},
author = {Tesler, Alexander B. and Nurmi, Heikki A. and Kolle, Stefan and Prado, Lucia H. and Karunakaran, Bhuvaneshwari and Mazare, Anca and Erceg, Ina and De Brito Soares, Íris and Sarau, George and Christiansen, Silke and Stafslien, Shane and Alvarenga, Jack and Aizenberg, Joanna and Fabry, Ben and Ras, Robin H. A. and Goldmann, Wolfgang H.},
month = jun,
year = {2024},
pages = {112},
}