Recoverable underwater superhydrophobicity from a fully wetted state via dynamic air spreading

Summary: Maintaining the superhydrophobicity underwater offers drag resistance reduction, antifouling, anti-corrosion, noise reduction, and gas collection for boat hulls and submarine vehicles. However, superhydrophobicity typically does not last long underwater since the Cassie state is metastable....

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Autores principales:	Yiping Zhao, Zhao Xu, Lu Gong, Shu Yang, Hongbo Zeng, Chunju He, Dengteng Ge, Lili Yang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Surface chemistry Materials science Nanomaterials Science Q
Acceso en línea:	https://doaj.org/article/d0b0688a9d6b4957a3440588ae414458
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spelling	oai:doaj.org-article:d0b0688a9d6b4957a3440588ae4144582021-11-26T04:37:52ZRecoverable underwater superhydrophobicity from a fully wetted state via dynamic air spreading2589-004210.1016/j.isci.2021.103427https://doaj.org/article/d0b0688a9d6b4957a3440588ae4144582021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2589004221013985https://doaj.org/toc/2589-0042Summary: Maintaining the superhydrophobicity underwater offers drag resistance reduction, antifouling, anti-corrosion, noise reduction, and gas collection for boat hulls and submarine vehicles. However, superhydrophobicity typically does not last long underwater since the Cassie state is metastable. Here, we report a reversible and localized recovery of superhydrophobicity from the fully wetted state via air bubble spreading. Composed of sparse fluorinated chained nanoparticles, the submerged surface shows super-low energy barrier for bubble attachment. Especially the recovered plastron exhibits excellent longevity. Based on a simplified, truncated nanocone model, the dynamic spreading of bubbles is analyzed considering two basic parameters, i.e., surface geometric structure and surface energy (which appeared as intrinsic water contact angle). Numerical simulation results via COMSOL confirms the effect of geometric structure on bubble spreading. This investigation will not only offer new insights for the design of robust recoverable superhydrophobic surfaces but also broaden the applications of superhydrophobic coatings.Yiping ZhaoZhao XuLu GongShu YangHongbo ZengChunju HeDengteng GeLili YangElsevierarticleSurface chemistryMaterials scienceNanomaterialsScienceQENiScience, Vol 24, Iss 12, Pp 103427- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Surface chemistry Materials science Nanomaterials Science Q
spellingShingle	Surface chemistry Materials science Nanomaterials Science Q Yiping Zhao Zhao Xu Lu Gong Shu Yang Hongbo Zeng Chunju He Dengteng Ge Lili Yang Recoverable underwater superhydrophobicity from a fully wetted state via dynamic air spreading
description	Summary: Maintaining the superhydrophobicity underwater offers drag resistance reduction, antifouling, anti-corrosion, noise reduction, and gas collection for boat hulls and submarine vehicles. However, superhydrophobicity typically does not last long underwater since the Cassie state is metastable. Here, we report a reversible and localized recovery of superhydrophobicity from the fully wetted state via air bubble spreading. Composed of sparse fluorinated chained nanoparticles, the submerged surface shows super-low energy barrier for bubble attachment. Especially the recovered plastron exhibits excellent longevity. Based on a simplified, truncated nanocone model, the dynamic spreading of bubbles is analyzed considering two basic parameters, i.e., surface geometric structure and surface energy (which appeared as intrinsic water contact angle). Numerical simulation results via COMSOL confirms the effect of geometric structure on bubble spreading. This investigation will not only offer new insights for the design of robust recoverable superhydrophobic surfaces but also broaden the applications of superhydrophobic coatings.
format	article
author	Yiping Zhao Zhao Xu Lu Gong Shu Yang Hongbo Zeng Chunju He Dengteng Ge Lili Yang
author_facet	Yiping Zhao Zhao Xu Lu Gong Shu Yang Hongbo Zeng Chunju He Dengteng Ge Lili Yang
author_sort	Yiping Zhao
title	Recoverable underwater superhydrophobicity from a fully wetted state via dynamic air spreading
title_short	Recoverable underwater superhydrophobicity from a fully wetted state via dynamic air spreading
title_full	Recoverable underwater superhydrophobicity from a fully wetted state via dynamic air spreading
title_fullStr	Recoverable underwater superhydrophobicity from a fully wetted state via dynamic air spreading
title_full_unstemmed	Recoverable underwater superhydrophobicity from a fully wetted state via dynamic air spreading
title_sort	recoverable underwater superhydrophobicity from a fully wetted state via dynamic air spreading
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/d0b0688a9d6b4957a3440588ae414458
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Recoverable underwater superhydrophobicity from a fully wetted state via dynamic air spreading

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