Date of Original Version

2003

Type

Article

Rights Management

© 2003 American Institute of Physics

Abstract or Description

A flow-focusing geometry is integrated into a microfluidic device and used to study drop formation in liquid–liquid systems. A phase diagram illustrating the drop size as a function of flow rates and flow rate ratios of the two liquids includes one regime where drop size is comparable to orifice width and a second regime where drop size is dictated by the diameter of a thin ‘‘focused’’ thread, so drops much smaller than the orifice are formed. Both monodisperse and polydisperse emulsions can be produced.

DOI

10.1063/1.1537519

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Published In

Appl. Phys. Lett, 82, 3.