Formation of a Uniform Distribution of TiO_2 Nanotubes Array on Complex Geometry Samples

摘要

We demonstrate that is possible to create a uniform distribution of TiO_2 nanotubes array on complex geometry samples, like a titanium screw commonly used as a dental implant, using a very simple experimental set-up. TiO_2 nanotubes array were synthesized by a potentiostatic anodization process, in H_3PO_4 and HF aqueous solution. During the anodization, the titanium implants were used as working electrode and platinum sheet as a counter electrode, in order to anodize the whole screw, a rotating device was used. The morphology of the porous layers is controlled by anodization potential, electrolyte composition, anodization duration and cell temperature as well as by the geometry of the samples. This finding opens new perspectives in testing medical devices to all researchers. Scientists will may able to use the “real” prosthesis, exactly the same that are used in clinical practice, coating them with nanotubes. It will be easier to analyse the devices response using samples formed by “real” prosthesis, which could be tested in living bodies.