There are several methods for preparing nanoscale emulsions, including high-energy and low-energy techniques. High-energy methods involve mechanical processes such as high-pressure homogenization and ultrasonication, which apply intense shear forces to break down droplets into nanoscale sizes. Low-energy methods, like phase inversion temperature (PIT) and spontaneous emulsification, rely on the physicochemical properties of the system to achieve nano-sized droplets without the need for external mechanical energy.
