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arXiv · 2211.15228

Diffusion-Dominated Pinch-Off of Ultralow Surface Tension Fluids

Jack Hau Yung Lo·Yuan Liu·Sze Yi Mak·Zhuo Xu·Youchuang Chao·Kaye Jiale Li·Ho Cheung Shum·Lei Xu
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Abstract

We study the breakup of a liquid thread inside another liquid at different surface tensions. In general, the pinch-off of a liquid thread is governed by the dynamics of fluid flow. However, when the interfacial tension is ultralow (2 to 3 orders lower than normal liquids), we find that the pinch-off dynamics can be governed by bulk diffusion. By studying the velocity and the profile of the pinch-off, we explain why the diffusion-dominated pinch-off takes over the conventional breakup at ultralow surface tensions.

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Jack Hau Yung Lo, Yuan Liu, Sze Yi Mak, Zhuo Xu, Youchuang Chao, Kaye Jiale Li, Ho Cheung Shum, Lei Xu. 2022-11-28. Diffusion-Dominated Pinch-Off of Ultralow Surface Tension Fluids. https://doi.org/10.1103/physrevlett.123.134501

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