The main physical processes involved in the process are: 1) evaporation of the polymer solution; 2) nucleation of water droplets; 3) condensation of water droplets; 4) growth of droplets; 5) evaporation of water; 6) solidification of polymer giving rise to the eventual micro-porous pattern. This experimental technique allows obtaining well-ordered, hierarchical, honeycomb surface patterns. A variety of experimental techniques were successfully exploited for the formation of breath-figures self-assembly induced patterns including drop-casting, dip-coating and spin-coating. Adapted techniques to achieve varied pattern morphologies and hierarchical designs have also been developed. The characteristic dimension of pores is usually close to 1 μm, whereas the characteristic lateral dimension of the large-scale patterns is ca. 10–50 μm.