The developed methodology measures dynamic interfacial tension down to 3ms. Surfactant adsorption times can be significant if compared to drop formation times. Dynamic interfacial tension was observed even with small-molecule surfactants. The proposed criteria ensure equilibrium interfacial tension during drop formation.

The control of droplet formation and size using microfluidic devices is a critical operation for both laboratory and industrial applications, e.g. in micro-dosage. Surfactants can be added to improve the...

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