Since their discovery in the 1990s self-organized nanopore arrays, resulting from anodization of aluminum, have attracted a considerable interest as a template for growing arrays of dots, wires etc. We have implemented this technique and are now able to tune pore diameter and period based on the electrolyte and voltage. Procedures were optimized to fill the template with wires and tubes of functional metals, alloys, oxides and semiconductors.
We have revisited the epitaxial growth of Fe(110) on refractory metals such as Mo(110) and W(110), with a view to explore extensively the possibilities of self-organization. Various dots and wires with a size ranging from the micron-scale to below ten nanometers have been achieved.