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Updated: Jul 5, 2025

Quantitative and Temporal Control of Oxygen Microenvironment at the Single Islet Level
Published on: November 17, 2013
Solutocapillary transport of oxygen bubbles in a diffusion-bubbling membrane core
Valery V Belousov1, Sergey V Fedorov1
1Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 49 Leninskii Pr., 119334 Moscow, Russian Federation. vbelousov@imet.ac.ru.
Abstract:
Bubbles are extensively explored as gas and energy carriers. However, despite notable progress, the bubble transport mechanisms are still poorly understood. At the present time there is not sufficient understanding of whether the body or surface forces play a major role in bubble transport in liquid interfacial systems. This understanding is important to be able to drive oxygen bubble transport. Here, we show the crucial role of solutocapillary forces in oxygen bubble transport in the core of a diffusion-bubbling membrane with a high density of solid/liquid and gas/liquid interfaces that operates under the oxygen chemical potential gradient. In order to describe the transport of oxygen bubbles in the membrane core, we developed a mathematical model. Both the velocity of bubbles and oxygen flux through this membrane predicted by this model agree with experiments. An in-depth understanding of the bubble transport mechanism presented in this study could eventually lead the way to more efficient bubble membrane gas separation, bubble energy generation, and bubble-assisted therapy in the future.
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