| Numéro |
La Houille Blanche
Numéro 4, Août 2003
|
|
|---|---|---|
| Page(s) | 37 - 42 | |
| DOI | https://doi.org/10.1051/lhb/2003073 | |
| Publié en ligne | 1 juillet 2009 | |
Déplacement de gouttes sur un microcaténaire
Moving droplets with a micro catenary.
1
CEA-LETI Département pour l'Information et la Santé, Service des Systèmes pour la Biologie et la Santé. Laboratoire des Microsystèmes pour la Biologie, 17 rue des Martyrs. 38054 Grenoble Cedex 9 - France
2
Institut Curie II, rue Pierre et Marie Curie. 75231 Paris cedex 05 / UMR 168
Auteur de correspondance : Yves.fouillet@cea.fr
Abstract
Moving droplets with a micro catenary. We first describe the advamages of the handling of individual droplets in microfluidic systems. To that end, we use electro-wetting to induce changes in the contact angles of drops in partial wetting. As an electrode and a guide for the drops. we use an original design consisting in a thin (25-50 mm) gold wire used as a microcatenary. The displacement of drops in the micro-liter range is obtained first with an underlying matrix of electrodes and second, by an effect of asymmetric wetting and dewetting obtained by a surface with directed structuration. We report the technology and the fluidic validation.
© Société Hydrotechnique de France, 2003