MICROSYSTEM FOR CONTROLLED DISPENSATION OF AN ACTIVE SUBSTANCE FROM A RESERVOIR

摘要

The invention relates to a microsystem for controlling the release of an active substance from a reservoir, comprising a thin carrier substrate (1) which is made of a material which is impermeable with respect to the active substance and has one or more through openings (5) for the active substance. Several electrodes (3) are arranged in the region of the through openings (5) and can be controlled by means of an electronic system (2) which is integrated into the carrier substrate (1). The through openings (5) are embodied in the form of microgaps and/or microchannels respectively comprising electrodes (3) on both sides and covered by a layer (7) of an electroporous material on one side of the carrier substrate. The microsystem can be used advantageously for controlled release of an active substance in applications where space requirements are critical.