© Springer-Verlag Berlin Heidelberg 2003 Miniemulsions are specially formulated heterophase systems consisting of stable nanodroplets in a continuous phase. The narrowly size distributed nanodroplets of 50 to 500 nm can be prepared by shearing a system containing oil, water, a surfactant, and an osmotic pressure agent which is insoluble in the continuous phase. Since each of the nanodroplets ca...