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Microbubble flows in superwettable fluidic channels
The control of bubble adhesion underwater is important for various applications, yet the dynamics under flow conditions are still to be unraveled. Herein, we observed the wetting dynamics of an underwater microbubble stream in superwettable channels. The flow of microbubbles was generated by integra...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9066019/ https://www.ncbi.nlm.nih.gov/pubmed/35521302 http://dx.doi.org/10.1039/c9ra04212a |
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author | Tenjimbayashi, Mizuki Doi, Kotaro Naito, Masanobu |
author_facet | Tenjimbayashi, Mizuki Doi, Kotaro Naito, Masanobu |
author_sort | Tenjimbayashi, Mizuki |
collection | PubMed |
description | The control of bubble adhesion underwater is important for various applications, yet the dynamics under flow conditions are still to be unraveled. Herein, we observed the wetting dynamics of an underwater microbubble stream in superwettable channels. The flow of microbubbles was generated by integrating a microfluidic device with an electrochemical system. The microbubble motions were visualized via tracing the flow using a high-speed camera. We show that a vortex is generated in the air layer of the superaerophilic surface under laminar conditions and that the microbubbles are transported on the superaerophilic surface under turbulent conditions driven by the dynamic motion of the air film. Furthermore, microbubbles oscillated backward and forward on the superaerophobic surface under turbulent conditions. This investigation contributes to our understanding of the principles of drag reduction through wettability control and bubble flow. |
format | Online Article Text |
id | pubmed-9066019 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90660192022-05-04 Microbubble flows in superwettable fluidic channels Tenjimbayashi, Mizuki Doi, Kotaro Naito, Masanobu RSC Adv Chemistry The control of bubble adhesion underwater is important for various applications, yet the dynamics under flow conditions are still to be unraveled. Herein, we observed the wetting dynamics of an underwater microbubble stream in superwettable channels. The flow of microbubbles was generated by integrating a microfluidic device with an electrochemical system. The microbubble motions were visualized via tracing the flow using a high-speed camera. We show that a vortex is generated in the air layer of the superaerophilic surface under laminar conditions and that the microbubbles are transported on the superaerophilic surface under turbulent conditions driven by the dynamic motion of the air film. Furthermore, microbubbles oscillated backward and forward on the superaerophobic surface under turbulent conditions. This investigation contributes to our understanding of the principles of drag reduction through wettability control and bubble flow. The Royal Society of Chemistry 2019-07-09 /pmc/articles/PMC9066019/ /pubmed/35521302 http://dx.doi.org/10.1039/c9ra04212a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Tenjimbayashi, Mizuki Doi, Kotaro Naito, Masanobu Microbubble flows in superwettable fluidic channels |
title | Microbubble flows in superwettable fluidic channels |
title_full | Microbubble flows in superwettable fluidic channels |
title_fullStr | Microbubble flows in superwettable fluidic channels |
title_full_unstemmed | Microbubble flows in superwettable fluidic channels |
title_short | Microbubble flows in superwettable fluidic channels |
title_sort | microbubble flows in superwettable fluidic channels |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9066019/ https://www.ncbi.nlm.nih.gov/pubmed/35521302 http://dx.doi.org/10.1039/c9ra04212a |
work_keys_str_mv | AT tenjimbayashimizuki microbubbleflowsinsuperwettablefluidicchannels AT doikotaro microbubbleflowsinsuperwettablefluidicchannels AT naitomasanobu microbubbleflowsinsuperwettablefluidicchannels |