High-performance system for the parallel and selective...

B - Operations – Transporting – 01 – L

Patent

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Details

B01L 3/02 (2006.01) B01J 19/00 (2006.01) B01L 3/00 (2006.01)

Patent

CA 2411748

The invention concerns a method for significantly increasing the performance of selective dispensing of micro-droplets, for producing spatial and targeted selectivity by dispensing a predetermined reagent on a predetermined site, and in providing an easily adaptable multifunctional system. One embodiment of the inventive system comprises a substrate (2) covered with a diaphragm (3) and means for deforming (65) the diaphragm perpendicular to each cavity formed in the substrate, and wherein the cavities, etched in a material forming the substrate (2) according to a matrix-type arrangement, are in the form of wells (10) passing through the substrate with axially symmetrical continuous side walls (11); each well emerges onto an upper surface and a lower surface of the substrate respectively as a feeding orifice (12) and a discharge orifice (14), the feeding orifice having an opening substantially greater than the nozzle orifice (13).

L'invention vise à permettre une augmentation considérable du rendement de distribution sélective de micro-gouttelettes, à réaliser une sélectivité spatiale et ciblée en distribuant un réactif prédéterminé sur le site prédéterminé, et à réaliser un système multifonctionnel et facile à adapter. Un exemple de système de distribution selon l'invention comporte un substrat (2) recouvert d'une membrane (3) et des moyens de déformation (65) de la membrane au droit de chaque cavité formée dans le substrat, et dans lequel les cavités, gravées dans un matériau constituant le substrat (2) selon un arrangement matriciel, se présentent sous forme de puits (10) traversant le substrat avec des parois latérales continues (11) de symétrie axiale; chaque puits débouche sur la face supérieure et la face inférieure du substrat selon respectivement un orifice d'alimentation (12) et une buse d'éjection (14), l'orifice d'alimentation présentant une ouverture sensiblement supérieure à l'orifice (13) de la buse.

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