Vafaei, S and Wen, D (2015) Modification of the Young-Laplace equation and prediction of bubble interface in the presence of nanoparticles. Advances in Colloid and Interface Science, 225. pp. 1-15. ISSN 0001-8686
Abstract
Bubbles are fundamental to our daily life and have wide applications such as in the chemical and petrochemical industry, pharmaceutical engineering, mineral processing and colloids engineering. This paper reviews the existing theoretical and experimental bubble studies, with a special focus on the dynamics of triple line and the influence of nanoparticles on the bubble growth and departure process. Nanoparticles are found to influence significantly the effective interfacial properties and the dynamics of triple line, whose effects are dependent on the particle morphology and their interaction with the substrate. While the Young–Laplace equation is widely applied to predict the bubble shape, its application is limited under highly non-equilibrium conditions. Using gold nanoparticle as an example, new experimental study is conducted to reveal the particle concentration influence on the behaviour of triple line and bubble dynamics. A new method is developed to predict the bubble shape when the interfacial equilibrium conditions cannot be met, such as during the oscillation period. The method is used to calculate the pressure difference between the gas and liquid phases, which is shown to oscillate across the liquid–gas interface and is responsible for the interface fluctuation. The comparison of the theoretical study with the experimental data shows a very good agreement, which suggests its potential application to predict bubble shape during non-equilibrium conditions.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015, Elsevier Ltd. This is an author produced version of a paper published in Advances in Colloid and Interface Science. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Dynamics of bubble growth; Dynamics of triple line; Liquid-gas surface tension; Solid surface tensions; Nanofluids; Young-Laplace equation |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 27 Apr 2016 15:19 |
Last Modified: | 26 Oct 2016 06:43 |
Published Version: | http://dx.doi.org/10.1016/j.cis.2015.07.006 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.cis.2015.07.006 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:94736 |