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Water release curve for 70°, 90° and 110° contact angle, showing the wetting and drying curves for the three different contact angles. Each subplot shows three regions which are separated by the black dotted lines: R1 (the left most region) and R3 (the right most region) in which the bubble solution is valid and R2 (the middle region) which exhibits hysteresis and is strongly geometry dependent. (Online version in colour.)
