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Molecular Dynamics Simulation of the Influence of Nanoscale Structure on Water Wetting and Condensation

Recent advances in the microfabrication technology have made it possible to control surface properties at micro- and nanoscale levels. Functional surfaces drastically change wettability and condensation processes that are essential for controlling of heat transfer. However, the direct observation of...

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Detalles Bibliográficos
Autores principales: Hiratsuka, Masaki, Emoto, Motoki, Konno, Akihisa, Ito, Shinichiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780133/
https://www.ncbi.nlm.nih.gov/pubmed/31480496
http://dx.doi.org/10.3390/mi10090587
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author Hiratsuka, Masaki
Emoto, Motoki
Konno, Akihisa
Ito, Shinichiro
author_facet Hiratsuka, Masaki
Emoto, Motoki
Konno, Akihisa
Ito, Shinichiro
author_sort Hiratsuka, Masaki
collection PubMed
description Recent advances in the microfabrication technology have made it possible to control surface properties at micro- and nanoscale levels. Functional surfaces drastically change wettability and condensation processes that are essential for controlling of heat transfer. However, the direct observation of condensation on micro- and nanostructure surfaces is difficult, and further understanding of the effects of the microstructure on the phase change is required. In this research, the contact angle of droplets with a wall surface and the initial condensation process were analyzed using a molecular dynamics simulation to investigate the impact of nanoscale structures and their adhesion force on condensation. The results demonstrated the dependence of the contact angle of the droplets and condensation dynamics on the wall structure and attractive force of the wall surface. Condensed water droplets were adsorbed into the nanostructures and formed a water film in case of a hydrophilic surface.
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spelling pubmed-67801332019-10-30 Molecular Dynamics Simulation of the Influence of Nanoscale Structure on Water Wetting and Condensation Hiratsuka, Masaki Emoto, Motoki Konno, Akihisa Ito, Shinichiro Micromachines (Basel) Article Recent advances in the microfabrication technology have made it possible to control surface properties at micro- and nanoscale levels. Functional surfaces drastically change wettability and condensation processes that are essential for controlling of heat transfer. However, the direct observation of condensation on micro- and nanostructure surfaces is difficult, and further understanding of the effects of the microstructure on the phase change is required. In this research, the contact angle of droplets with a wall surface and the initial condensation process were analyzed using a molecular dynamics simulation to investigate the impact of nanoscale structures and their adhesion force on condensation. The results demonstrated the dependence of the contact angle of the droplets and condensation dynamics on the wall structure and attractive force of the wall surface. Condensed water droplets were adsorbed into the nanostructures and formed a water film in case of a hydrophilic surface. MDPI 2019-08-31 /pmc/articles/PMC6780133/ /pubmed/31480496 http://dx.doi.org/10.3390/mi10090587 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hiratsuka, Masaki
Emoto, Motoki
Konno, Akihisa
Ito, Shinichiro
Molecular Dynamics Simulation of the Influence of Nanoscale Structure on Water Wetting and Condensation
title Molecular Dynamics Simulation of the Influence of Nanoscale Structure on Water Wetting and Condensation
title_full Molecular Dynamics Simulation of the Influence of Nanoscale Structure on Water Wetting and Condensation
title_fullStr Molecular Dynamics Simulation of the Influence of Nanoscale Structure on Water Wetting and Condensation
title_full_unstemmed Molecular Dynamics Simulation of the Influence of Nanoscale Structure on Water Wetting and Condensation
title_short Molecular Dynamics Simulation of the Influence of Nanoscale Structure on Water Wetting and Condensation
title_sort molecular dynamics simulation of the influence of nanoscale structure on water wetting and condensation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780133/
https://www.ncbi.nlm.nih.gov/pubmed/31480496
http://dx.doi.org/10.3390/mi10090587
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