A.Apolinário, C.T. Sousa, J. Ventura, J.D. Costa, D.C. Leitão, J.M. Moreira, J. B. Sousa A.M. Mendes and J. P Araújo, “Anodic fast-growth of highly ordered hexagonal arrays of TiO2 nanotubes by a single anodization step”, nanoPT 2013 - NanoPortugal International Conference February 13-15, Porto, Portugal 2013.