We developed a microfluidic chip in which two microchannels, containing aqueous and oil phases, meet each other at a horizontal interface. Confocal microscopy is used to study the adsorption, assembly and dynamics of colloidal spheres at water/decane interfaces. The aqueous phase composition, which controls dissociation and electrostatics, is explored for its effects on adsorption and assembly. The oil phase is used to deliver fatty acids to the interface. This induces formation of a solidlike layer, which modifies the particle dynamics.

Composition-induced changes of particle laden oil-water interfaces, studied with microfluidics

243rd National Meeting (2012)

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