A number of application properties of materials depends on the morphology and state of their surfaces. It is not deciding if the surface is outer or inner. The materials behaviour is strongly affected by interface boundaries between separate blocks of microstructure forming the whole solid. The interface boundaries becomes more important (and their area fraction is higher) for materials with lower block dimensions. Followingly the most important is for interfaces in nanostructured materials. The course "Surface engineering" is focused on the most important aspects of surfaces and interface boundaries, physical, chemical and mechanical, namely from theoretical, diagnostic and technologic aspects.