Apparatus for making controlled segregated phase domain structures

The invention first substrate; And a second substrate (coupled) linked to the first substrate, controlling the amount of the constituents of the precursor (precursor) present per unit surface area by the phase separation (segregated phase) formation of a domain structure within a chemical reaction product to control, at least one member selected from the group consisting of the first to the first substrate and the second substrate is characterized in that it defines a relief (relief) regularly and changing periodically with substantially with respect to basal spatial location (basal spatial location) the phase control provides a device to create a separate domain structure.