Patent ID: 6833112
Filing Date: 2004-12-21
Classification: B01J,B01L,C40B,G01N,Y10T

Abstract:
High-performance dispensing system of micro-droplets, comprising:a substrate (2); a membrane covering the substrate; and means (65, 70) for deforming the membrane perpendicularly to cavities (10) formed in the substrate (2), characterized in that the cavities, etched in a material composing the substrate appear in the shape of wells crossing the substrate with a continuous lateral wall (11) of axial symmetry, and in that each well opens on the upper surface and the lower surface of the substrate as respectively a feeding opening (12) and a duct (14) opened as an ejection nozzle (13), the feeding opening presenting an opening higher than the nozzle (13) of the duct, and the duct presenting a shape ratio between 1 and 20; wherein the wells are configured in one of a matrix form, a circular concentric form, and a spiral form, or combinations thereof; and further comprising a plurality of microducts, the plurality of microducts arranged in layers in three dimensions in either the substrate or membrane, each microduct being coupled to one or more wells by connections perpendicular to the upper openings of the wells.