A study on the dynamic behaviors of water droplets impacting nanostructured surfaces

A study on the dynamic behaviors of water droplets impacting nanostructured surfaces

We have investigated the influence of impact velocity and intrinsic surface wettability of nanostructures on the impact dynamic behaviors of water droplets on nanostructure surfaces. Nanowires array surfaces with tunable wettabilities ranging from superhydrophilic to superhydrophobic were fabricated...

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Bibliographic Details
Main Authors: Geunjae Kwak, Dong Woog Lee, In Seok Kang, Kijung Yong
Format: Article
Language:English
Published: AIP Publishing LLC 2011-12-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.3662046
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spelling doaj-d47eab9e5a304920b18dbe02499dad242020-11-24T22:40:43ZengAIP Publishing LLCAIP Advances2158-32262011-12-0114042139042139-610.1063/1.3662046044104ADVA study on the dynamic behaviors of water droplets impacting nanostructured surfacesGeunjae Kwak0Dong Woog Lee1In Seok Kang2Kijung Yong3Surface Chemistry Laboratory of Electronic Materials, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, KoreaComputational Fluid Dynamics Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, KoreaComputational Fluid Dynamics Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, KoreaSurface Chemistry Laboratory of Electronic Materials, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, KoreaWe have investigated the influence of impact velocity and intrinsic surface wettability of nanostructures on the impact dynamic behaviors of water droplets on nanostructure surfaces. Nanowires array surfaces with tunable wettabilities ranging from superhydrophilic to superhydrophobic were fabricated by the deposition of surface modifiers differing in alkyl chain length. The transition criteria of rebound/wetting state and rebound/splashing state based on the relationship between the Webber (We) number and the surface free energy were determined. We have confirmed that the critical We number that determines the transition of the rebound/wetting increased as surface energy decreased. Additionally, the We number at which fragmentation occurred on our superhydrophobic surface was relatively low compared to previously reported values.http://dx.doi.org/10.1063/1.3662046
collection DOAJ
language English
format Article
sources DOAJ
author Geunjae Kwak
Dong Woog Lee
In Seok Kang
Kijung Yong
spellingShingle Geunjae Kwak
Dong Woog Lee
In Seok Kang
Kijung Yong
A study on the dynamic behaviors of water droplets impacting nanostructured surfaces
AIP Advances
author_facet Geunjae Kwak
Dong Woog Lee
In Seok Kang
Kijung Yong
author_sort Geunjae Kwak
title A study on the dynamic behaviors of water droplets impacting nanostructured surfaces
title_short A study on the dynamic behaviors of water droplets impacting nanostructured surfaces
title_full A study on the dynamic behaviors of water droplets impacting nanostructured surfaces
title_fullStr A study on the dynamic behaviors of water droplets impacting nanostructured surfaces
title_full_unstemmed A study on the dynamic behaviors of water droplets impacting nanostructured surfaces
title_sort study on the dynamic behaviors of water droplets impacting nanostructured surfaces
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2011-12-01
description We have investigated the influence of impact velocity and intrinsic surface wettability of nanostructures on the impact dynamic behaviors of water droplets on nanostructure surfaces. Nanowires array surfaces with tunable wettabilities ranging from superhydrophilic to superhydrophobic were fabricated by the deposition of surface modifiers differing in alkyl chain length. The transition criteria of rebound/wetting state and rebound/splashing state based on the relationship between the Webber (We) number and the surface free energy were determined. We have confirmed that the critical We number that determines the transition of the rebound/wetting increased as surface energy decreased. Additionally, the We number at which fragmentation occurred on our superhydrophobic surface was relatively low compared to previously reported values.
url http://dx.doi.org/10.1063/1.3662046
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AT dongwooglee astudyonthedynamicbehaviorsofwaterdropletsimpactingnanostructuredsurfaces
AT inseokkang astudyonthedynamicbehaviorsofwaterdropletsimpactingnanostructuredsurfaces
AT kijungyong astudyonthedynamicbehaviorsofwaterdropletsimpactingnanostructuredsurfaces
AT geunjaekwak studyonthedynamicbehaviorsofwaterdropletsimpactingnanostructuredsurfaces
AT dongwooglee studyonthedynamicbehaviorsofwaterdropletsimpactingnanostructuredsurfaces
AT inseokkang studyonthedynamicbehaviorsofwaterdropletsimpactingnanostructuredsurfaces
AT kijungyong studyonthedynamicbehaviorsofwaterdropletsimpactingnanostructuredsurfaces
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