Ostwald ripening, early stage and late stage coalescence growth are well–characterized, fundamental late–stage processes in the phase separation of thin film deposits on surfaces. These processes have recently been studied in respect to ordering of the clustered phase. While late stage coalescence growth is associated with random positions of the growing clusters, partial ordering is observed for early stage coalescence and ripening
To obtain even higher order of clustering, additional physical driving forces must be included in the process. Two examples are discussed, one utilizing vertical correlation of clusters in super-lattice growth of coherent Stranski–Krastanov structures (coalescence based structures) and a novel concept based on preferential secondary clustering based on ripening morphologies.