2020•Physical Review FluidsRequires access

Expansion-mediated breakup of bubbles and droplets in microfluidics

Alinaghi Salari, Jiang Xu, Michael C. Kolios, Scott Tsai

Abstract

Different breakup regimes of bubbles and droplets caused by a sudden channel expansion in a microfluidic device are investigated. Without modifying the geometry and by only tuning several dimensionless parameters related to the fluid flow, a microchannel expansion region can produce mono-, bi-, or tri-disperse bubble or droplet populations.

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Key concepts: Breakup, Microchannel, Dimensionless quantity, Microfluidics, Mechanics, Bubble, Flow (mathematics), Materials science