Fig. 2: Bubble dimensions with respect to time.
From: Super liquid repellent surfaces for anti-foaming and froth management
Imaging at 2.5 cm below the maximum original foam height. Bubbles were analyzed over a surface area of 3.5 mm2, at the bubble-to-surface interface. The foam line recedes from view beyond 96 s for the fastest defoaming superamphiphobic surface. Control refers to unfunctionalized glass, SLIPS-HD refers to a slippery liquid-infused porous surface infused with hexadecane, and SA refers to superamphiphobic glass. a Average bubble radii with respect to time, showing a gradual rise in the control (inset, gray squares). Bubbles remained smallest for the superamphiphobic system. b Coalescence events observed in SLIPS. c Bursting events caused by the dissipation of a bubble during bubble-to-surface interaction were observed for the superamphiphobic surface. Observation of the first bursting event is dependent on the region of observation. All bubbles were computationally tracked (see “Methods”). d Analysis of the percentage count of bubble radii and areas over the entire 96 s duration (minus the first 12 s) revealed persistently small bubbles in the control and superamphiphobic surfaces. The largest bubble radii in each system are represented with a dashed line.
