Fuck Yeah Double Emulsions !

"It's like catching the fish that swallowed the queen's ring", Herzog, by Saul Bellow

Elegant and mesmerizing, these double emulsions, drops inside of drops, are generated with microfluidics for studying physics, biology, chemistry, robotics, and material science.

Altering the shape of water drops.  Water drops are spherical due to surface tension , that is, because of cohesive forces. Water molecules want to be adjacent to one other and far away from molecules that are different from them, like air or oil molecules. This has the effect of minimizing water’s surface area; hence, water drops are spherical. This is shown in the upper image of spherical water drops flowing inside a jet of oil. To reduce cohesive forces or surface tension, actually the interfacial tension between water and oil, surfactants, such as soap, are added to water. Since surfactant molecules have two ends, one that is attracted to water and one that isn’t, surfactant molecules disrupt the cohesive forces at the interface.  Consequently, if the surfactant molecules are strong enough and the disruption of the cohesive forces is widespread, the spherical shape of water drops no longer prevails. This is shown in the bottom image.  (Photo credit: L. L. A. Adams)

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    droplet.
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    dammit, now I want to write spy stories.
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    Well, this explains a lot of things.
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