A model for the self structuring of nanotubes in titanium oxide

An electrostatic model is presented to explain the closed packing observed in anodic production of nanotubes. The model is suggested by the experimental results of impedance spectroscopy performed during the growth of titanium oxide nanotubes in a polar nonaqueous electrolyte. The dynamics of the process is represented with the capacitance and the dc current. Accordingly, a combination of electrostatic and chemical activity defines the structure formation, ranging from of porous random materials to self-structured materials. In this model, the geometry of the nanostructure can be controlled with the voltage.