Fig. 1
From: A micro-dispenser for long-term storage and controlled release of liquids

Characterization of actuation pressure for a micro-dispenser (membrane made of latex) set. a A dispenser of outer diameter D = 6.6 mm is sheathed in membranes of fixed internal diameter and different thickness, b a dispenser of outer diameter D = 6.6 mm is sheathed in membranes of fixed thickness and different internal diameters, and c a dispenser of outer diameter D = 10.1 mm is sheathed in membranes of fixed internal diameter and different thickness