FORMATION OF DISPERSIONS USING "FLOW FOCUSING" IN MICROCHANNELS

doi:10.6052/1000-0992-2008-5-J2008-111

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FORMATION OF DISPERSIONS USING 'FLOW FOCUSING' IN MICROCHANNELS[J]. Advances in Mechanics, 2008, 38(5): 627-630. doi: 10.6052/1000-0992-2008-5-J2008-111

Citation:

FORMATION OF DISPERSIONS USING "FLOW FOCUSING" IN MICROCHANNELS[J]. Advances in Mechanics, 2008, 38(5): 627-630. doi: 10.6052/1000-0992-2008-5-J2008-111

FORMATION OF DISPERSIONS USING 'FLOW FOCUSING' IN MICROCHANNELS[J]. Advances in Mechanics, 2008, 38(5): 627-630. doi: 10.6052/1000-0992-2008-5-J2008-111

Citation:

FORMATION OF DISPERSIONS USING "FLOW FOCUSING" IN MICROCHANNELS[J]. Advances in Mechanics, 2008, 38(5): 627-630. doi: 10.6052/1000-0992-2008-5-J2008-111

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FORMATION OF DISPERSIONS USING "FLOW FOCUSING" IN MICROCHANNELS

doi: 10.6052/1000-0992-2008-5-J2008-111

Division of Engineering and Applied Sciences,Harvard University,CambridgeDivision of Engineering and Applied Sciences,Harvard University,CambridgeDivision of Engineering and Applied Sciences,Harvard University,Cambridge

Received Date: 2008-08-25
Publish Date: 2008-09-25

Abstract

Abstract

A flow-focusinggeometry is integrated into a microfluidic device and used tostudy drop formation in liquid-liquid systems. A phase diagramillustrating 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 polydisperseemulsions can be produced.
- microfluidic, flow focusing,emulsion drop, multiphase flow