Issue 18, 2015

Drying with no concentration gradient in large microfluidic droplets

Abstract

In most situations, drying is accompanied by the development of strong concentration gradients. Here, we evidence theoretically and experimentally that there exist microfluidic geometries for which confined drying becomes homogeneous, i.e., with no concentration gradient regardless of the type of solute involved in the process; ions, molecules, and colloids do concentrate in the same way providing a limited set of assumptions concerning the microfluidic geometry. It thus makes possible the establishment of phase diagrams of multi-component mixtures at the nanoliter scale.

Graphical abstract: Drying with no concentration gradient in large microfluidic droplets

Supplementary files

Article information

Article type
Paper
Submitted
04 Feb 2015
Accepted
15 Mar 2015
First published
16 Mar 2015

Soft Matter, 2015,11, 3637-3642

Drying with no concentration gradient in large microfluidic droplets

N. Ziane, M. Guirardel, J. Leng and J. Salmon, Soft Matter, 2015, 11, 3637 DOI: 10.1039/C5SM00299K

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