MICROFLUIDIC DEVICE FOR TRANSPORTING A PRODUCT BY DIFFUSION IN A POROUS SUBSTRATE

摘要

The invention provides a microfluidic device for conveying substance by diffusion in a porous substrate from a substance injection zone to a substance arrival zone, which zones are connected by a substance-channeling zone. According to the invention, the porous substrate presents a free surface that is partially covered by a mask that is impermeable and that extends from the injection zone to the arrival zone in order to define the substance-channeling zone in the substrate so as to enable the substance to evaporate through a non-covered portion of the free surface.