Cargando…

Two recipes for repelling hot water

Although a hydrophobic microtexture at a solid surface most often reflects rain owing to the presence of entrapped air within the texture, it is much more challenging to repel hot water. As it contacts a colder material, hot water generates condensation within the cavities at the solid surface, whic...

Descripción completa

Detalles Bibliográficos
Autores principales: Mouterde, Timothée, Lecointre, Pierre, Lehoucq, Gaëlle, Checco, Antonio, Clanet, Christophe, Quéré, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6440975/
https://www.ncbi.nlm.nih.gov/pubmed/30926820
http://dx.doi.org/10.1038/s41467-019-09456-8
_version_ 1783407462522552320
author Mouterde, Timothée
Lecointre, Pierre
Lehoucq, Gaëlle
Checco, Antonio
Clanet, Christophe
Quéré, David
author_facet Mouterde, Timothée
Lecointre, Pierre
Lehoucq, Gaëlle
Checco, Antonio
Clanet, Christophe
Quéré, David
author_sort Mouterde, Timothée
collection PubMed
description Although a hydrophobic microtexture at a solid surface most often reflects rain owing to the presence of entrapped air within the texture, it is much more challenging to repel hot water. As it contacts a colder material, hot water generates condensation within the cavities at the solid surface, which eventually builds bridges between the substrate and the water, and thus destroys repellency. Here we show that both “small” (~100 nm) and “large” (~10 µm) model features do reflect hot drops at any drop temperature and in the whole range of explored impact velocities. Hence, we can define two structural recipes for repelling hot water: drops on nanometric features hardly stick owing to the miniaturization of water bridges, whereas kinetics of condensation in large features is too slow to connect the liquid to the solid at impact.
format Online
Article
Text
id pubmed-6440975
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-64409752019-04-01 Two recipes for repelling hot water Mouterde, Timothée Lecointre, Pierre Lehoucq, Gaëlle Checco, Antonio Clanet, Christophe Quéré, David Nat Commun Article Although a hydrophobic microtexture at a solid surface most often reflects rain owing to the presence of entrapped air within the texture, it is much more challenging to repel hot water. As it contacts a colder material, hot water generates condensation within the cavities at the solid surface, which eventually builds bridges between the substrate and the water, and thus destroys repellency. Here we show that both “small” (~100 nm) and “large” (~10 µm) model features do reflect hot drops at any drop temperature and in the whole range of explored impact velocities. Hence, we can define two structural recipes for repelling hot water: drops on nanometric features hardly stick owing to the miniaturization of water bridges, whereas kinetics of condensation in large features is too slow to connect the liquid to the solid at impact. Nature Publishing Group UK 2019-03-29 /pmc/articles/PMC6440975/ /pubmed/30926820 http://dx.doi.org/10.1038/s41467-019-09456-8 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Mouterde, Timothée
Lecointre, Pierre
Lehoucq, Gaëlle
Checco, Antonio
Clanet, Christophe
Quéré, David
Two recipes for repelling hot water
title Two recipes for repelling hot water
title_full Two recipes for repelling hot water
title_fullStr Two recipes for repelling hot water
title_full_unstemmed Two recipes for repelling hot water
title_short Two recipes for repelling hot water
title_sort two recipes for repelling hot water
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6440975/
https://www.ncbi.nlm.nih.gov/pubmed/30926820
http://dx.doi.org/10.1038/s41467-019-09456-8
work_keys_str_mv AT mouterdetimothee tworecipesforrepellinghotwater
AT lecointrepierre tworecipesforrepellinghotwater
AT lehoucqgaelle tworecipesforrepellinghotwater
AT checcoantonio tworecipesforrepellinghotwater
AT clanetchristophe tworecipesforrepellinghotwater
AT queredavid tworecipesforrepellinghotwater