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APS » Journals » Phys. Rev. Lett. » Volume 96 » Issue 8
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Phys. Rev. Lett. 96, 084503 (2006) [4 pages]

Microevaporators for Kinetic Exploration of Phase Diagrams

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Jacques Leng*, Barbara Lonetti, and Patrick Tabeling
Microfluidique, MEMS and Nanostructures, UMR 7083 CNRS-ESPCI, 10 rue Vauquelin, 75231 Paris, France

Mathieu Joanicot
Rhodia, Laboratory of the Future, 178 avenue du Dr. Schweitzer, 33608 Pessac, France

Armand Ajdari
Physico-Chimie Théorique, UMR 7083 CNRS-ESPCI, 10 rue Vauquelin, 75231 Paris, France

Received 7 October 2005; published 1 March 2006

See accompanying Physics Focus

We use pervaporation-based microfluidic devices to concentrate species in aqueous solutions with spatial and temporal control of the process. Using experiments and modeling, we quantitatively describe the advection-diffusion behavior of the concentration field of various solutions (electrolytes, colloids, etc.) and demonstrate the potential of these devices as universal tools for the kinetic exploration of the phases and textures that form upon concentration.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.084503
DOI:
10.1103/PhysRevLett.96.084503
PACS:
47.61.–k, 07.90.+c, 64.75.+g

*Electronic address: jacques.leng@espci.fr

 
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