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Issue 18, 2010
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Ionic liquid-based compound droplet microfluidics for ‘on-drop’ separations and sensing

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Abstract

We present a new and general scheme for analytical applications of droplet-based microfluidics in which flowing droplets function not only as isolated reaction flasks, but are also capable of on-drop separation and sensing. To demonstrate this, we choose ionic liquids as designer fluids whose chemical and physical properties can be tailored in task-specific fashion. We create aqueous–ionic liquid compound droplets with tunable structures using an imidazolium-based ionic liquid, and present two analytical applications—separation of a binary aqueous mixture of organic dyes and dynamic pH sensing—to highlight the salient features of this scheme. By combining designer fluids with designer microfluidic emulsions, our work opens up a rich space of exploration for analytical microfluidics.

Graphical abstract: Ionic liquid-based compound droplet microfluidics for ‘on-drop’ separations and sensing

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Article information


Submitted
01 Apr 2010
Accepted
06 Jul 2010
First published
10 Aug 2010

Lab Chip, 2010,10, 2458-2463
Article type
Paper

Ionic liquid-based compound droplet microfluidics for ‘on-drop’ separations and sensing

Z. Barikbin, Md. T. Rahman, P. Parthiban, A. S. Rane, V. Jain, S. Duraiswamy, S. H. S. Lee and S. A. Khan, Lab Chip, 2010, 10, 2458
DOI: 10.1039/C004853D

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