A method of producing an emulsion includes preparing a droplet solution comprising first and second molecular species, the droplet solution being in a fluid phase, wherein the first molecular species is soluble in the second molecular species forming a plurality of droplets from the droplet solution in a bulk fluid to create a first emulsion, the plurality of droplets having a first ensemble average radius in the bulk fluid, wherein the first molecular species of the droplet solution is at least partially soluble in the bulk fluid and the droplet solution is at least partially immiscible in the bulk fluid and allowing molecules of the first molecular species to migrate from the plurality of fluid droplets to the bulk fluid due to a higher concentration of the first molecular species in the droplet solution than the bulk fluid to result in the plurality of droplets having a second ensemble average radius that is smaller than the first ensemble average radius. An emulsion includes a bulk fluid and a plurality of droplets dispersed in the bulk fluid. The plurality of droplets have an ensemble average radius less than about 25 nm and greater than about 5 nm.
