Cargando…

Loss of superhydrophobicity of hydrophobic micro/nano structures during condensation

Condensed liquid behavior on hydrophobic micro/nano-structured surfaces is a subject with multiple practical applications, but remains poorly understood. In particular, the loss of superhydrophobicity of hydrophobic micro/nanostructures during condensation, even when the same surface shows water-rep...

Descripción completa

Detalles Bibliográficos
Autores principales: Jo, HangJin, Hwang, Kyung Won, Kim, DongHyun, Kiyofumi, Moriyama, Park, Hyun Sun, Kim, Moo Hwan, Ahn, Ho Seon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5386109/
https://www.ncbi.nlm.nih.gov/pubmed/25905817
http://dx.doi.org/10.1038/srep09901
_version_ 1782520708701618176
author Jo, HangJin
Hwang, Kyung Won
Kim, DongHyun
Kiyofumi, Moriyama
Park, Hyun Sun
Kim, Moo Hwan
Ahn, Ho Seon
author_facet Jo, HangJin
Hwang, Kyung Won
Kim, DongHyun
Kiyofumi, Moriyama
Park, Hyun Sun
Kim, Moo Hwan
Ahn, Ho Seon
author_sort Jo, HangJin
collection PubMed
description Condensed liquid behavior on hydrophobic micro/nano-structured surfaces is a subject with multiple practical applications, but remains poorly understood. In particular, the loss of superhydrophobicity of hydrophobic micro/nanostructures during condensation, even when the same surface shows water-repellant characteristics when exposed to air, requires intensive investigation to improve and apply our understanding of the fundamental physics of condensation. Here, we postulate the criterion required for condensation to form from inside the surface structures by examining the grand potentials of a condensation system, including the properties of the condensed liquid and the conditions required for condensation. The results imply that the same hydrophobic micro/nano-structured surface could exhibit different liquid droplet behavior depending on the conditions. Our findings are supported by the observed phenomena: the initiation of a condensed droplet from inside a hydrophobic cavity, the apparent wetted state changes, and the presence of sticky condensed droplets on the hydrophobic micro/nano-structured surface.
format Online
Article
Text
id pubmed-5386109
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-53861092017-04-14 Loss of superhydrophobicity of hydrophobic micro/nano structures during condensation Jo, HangJin Hwang, Kyung Won Kim, DongHyun Kiyofumi, Moriyama Park, Hyun Sun Kim, Moo Hwan Ahn, Ho Seon Sci Rep Article Condensed liquid behavior on hydrophobic micro/nano-structured surfaces is a subject with multiple practical applications, but remains poorly understood. In particular, the loss of superhydrophobicity of hydrophobic micro/nanostructures during condensation, even when the same surface shows water-repellant characteristics when exposed to air, requires intensive investigation to improve and apply our understanding of the fundamental physics of condensation. Here, we postulate the criterion required for condensation to form from inside the surface structures by examining the grand potentials of a condensation system, including the properties of the condensed liquid and the conditions required for condensation. The results imply that the same hydrophobic micro/nano-structured surface could exhibit different liquid droplet behavior depending on the conditions. Our findings are supported by the observed phenomena: the initiation of a condensed droplet from inside a hydrophobic cavity, the apparent wetted state changes, and the presence of sticky condensed droplets on the hydrophobic micro/nano-structured surface. Nature Publishing Group 2015-04-23 /pmc/articles/PMC5386109/ /pubmed/25905817 http://dx.doi.org/10.1038/srep09901 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Jo, HangJin
Hwang, Kyung Won
Kim, DongHyun
Kiyofumi, Moriyama
Park, Hyun Sun
Kim, Moo Hwan
Ahn, Ho Seon
Loss of superhydrophobicity of hydrophobic micro/nano structures during condensation
title Loss of superhydrophobicity of hydrophobic micro/nano structures during condensation
title_full Loss of superhydrophobicity of hydrophobic micro/nano structures during condensation
title_fullStr Loss of superhydrophobicity of hydrophobic micro/nano structures during condensation
title_full_unstemmed Loss of superhydrophobicity of hydrophobic micro/nano structures during condensation
title_short Loss of superhydrophobicity of hydrophobic micro/nano structures during condensation
title_sort loss of superhydrophobicity of hydrophobic micro/nano structures during condensation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5386109/
https://www.ncbi.nlm.nih.gov/pubmed/25905817
http://dx.doi.org/10.1038/srep09901
work_keys_str_mv AT johangjin lossofsuperhydrophobicityofhydrophobicmicronanostructuresduringcondensation
AT hwangkyungwon lossofsuperhydrophobicityofhydrophobicmicronanostructuresduringcondensation
AT kimdonghyun lossofsuperhydrophobicityofhydrophobicmicronanostructuresduringcondensation
AT kiyofumimoriyama lossofsuperhydrophobicityofhydrophobicmicronanostructuresduringcondensation
AT parkhyunsun lossofsuperhydrophobicityofhydrophobicmicronanostructuresduringcondensation
AT kimmoohwan lossofsuperhydrophobicityofhydrophobicmicronanostructuresduringcondensation
AT ahnhoseon lossofsuperhydrophobicityofhydrophobicmicronanostructuresduringcondensation