Interfacial properties influence the bulk phase behavior and often the bulk structure. For very small systems (nanoparticles, thin films) this is obvious. The relative amount of interfacial molecules is large. Yet, interfacial influences often are also important for macroscopically large systems because these typically originate from small nano size aggregates. In addition, the growth to macroscopic size always occurs at the interface. Local interfacial transport conditions affect the growth kinetics and thus also the structure and properties of the resulting macroscopic entity.