Microfluidic interfacial tensiometry

A microfluidic approach to measure interfacial tension σ of immiscible fluids rapidly is reported. This method rests upon quantitative real-time analysis of two-phase flow and drop-shape dynamics. Drops of prescribed dimension and spacing are produced, accelerated, and deformed under extensional flo...

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Bibliographic Details
Published in:Applied physics letters 2005-08, Vol.87 (8), p.081905-081905-3
Main Authors: Hudson, Steven D., Cabral, João T., Goodrum, William J., Beers, Kathryn L., Amis, Eric J.
Format: Article
Language:English
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Summary:A microfluidic approach to measure interfacial tension σ of immiscible fluids rapidly is reported. This method rests upon quantitative real-time analysis of two-phase flow and drop-shape dynamics. Drops of prescribed dimension and spacing are produced, accelerated, and deformed under extensional flow. These measurements compare well with existing published data and demonstrate a wide range of accessible interfacial tension (e.g., from 2.5 to 60 mN ∕ m ).
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2034098