Issue 17, 2020

Buoyancy-driven step emulsification on pneumatic centrifugal microfluidic platforms

Abstract

We present here a new method for controlling the droplet size in step emulsification processes on a centrifugal microfluidic platform, which, in addition to the centrifugal force, uses pneumatic actuation for fluid displacement. We highlight the importance of the interplay between buoyancy effects and the flow rate at the step junction, and provide a simple analytical model relating these two quantities to the size of the droplets. Numerical models as well as experiments with water-in-oil emulsions are performed in support of the proposed model.

Graphical abstract: Buoyancy-driven step emulsification on pneumatic centrifugal microfluidic platforms

Supplementary files

Article information

Article type
Communication
Submitted
02 Apr 2020
Accepted
21 Jun 2020
First published
22 Jun 2020

Lab Chip, 2020,20, 3091-3095

Buoyancy-driven step emulsification on pneumatic centrifugal microfluidic platforms

L. Clime, L. Malic, J. Daoud, L. Lukic, M. Geissler and T. Veres, Lab Chip, 2020, 20, 3091 DOI: 10.1039/D0LC00333F

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