, and lecithin . In this context, it is worth noting that surfactants such as Pluronic F68, Tween 80, and sodium lauryl sulfate have been replaced by lecithin, which also forms the interfacial composition in lipid-polymer hybrid structures (Figure ). Other notable changes in this area essentially concern some experimental details (the choice of organic solvent in the emulsion, the mixing procedure, etc.); these will be discussed in the next section.