MICROFLUIDIC FOIL STRUCTURE FOR METERING OF FLUIDS

摘要

589466 Disclosed is a microfluidic structure comprising a substrate. A film is attached flat to the substrate with unattached portions (25) so that a chamber (6) or a channel is formed above the substrate plane in an unattached portion (25). The film is a multilayer film, consisting of a sealing layer (4) arranged on the substrate and a covering layer (3) arranged above it, with the sealing layer (4) having a lower melting and/or softening temperature than the covering layer (3). In the edge zone between the unattached (25) and attached portions a wedge (11) of material is formed by the viscous flow of the film material as the film is bonded to the substrate, this wedge (11) of material forming a transition between the chamber wall and the substrate and lifting the chamber wall away from the substrate plane.