Schematic of the entire coalescence workflow with labelled inlets (top) and close-ups of key positions (bottom). At position (1), reinjected droplets are enveloped by an aqueous reagent phase in a hydrophilic channel. The resulting double emulsion travels to a hydrophobic junction at (2) where carrier oil encapsulates it to form a triple emulsion. At (3), the encapsulated double emulsion is ruptured with an electric field.
Microscope images of the double emulsion formation (a), triple emulsion formation (b), triple emulsion coalescence (c), flipped relative to the previous figure), and the final products (d). The scale bar applies to all images.
Two fast-camera time series showing rupture of encapsulated double emulsions. The oil shell of the inner emulsion is false-colored blue to make it easier to see.
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