TiO2 nanotubular fibers sensitized with CdS nanoparticles E. Ghadiri, N. Taghavinia, H. R. Aghabozorg and A. Iraji zad Eur. Phys. J. Appl. Phys., 50 2 (2010) 20601 Published online: 26 March 2010 DOI: 10.1051/epjap/2010025