1. A droplet assembly comprising a plurality of contacting droplets wherein each droplet in said plurality is in contact with at least one other droplet in said plurality, wherein each droplet in said plurality comprises an aqueous medium and an outer layer of amphipathic molecules around a surface of the aqueous medium, and wherein at least one of the plurality of contacting droplets comprises a magnetic material disposed in the aqueous medium; and wherein a bilayer of amphipathic molecules is formed at an interface between contacting droplets in said plurality of contacting droplets.
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