title: Lattice widening in niobium-doped TiO2 nanotubes: efficient ion intercalation and swift electrochromic contrast.
authors.affiliation: University of Erlangen-Nuremberg, Department of Materials Science, WW4-LKO, Martensstrasse 7, 91058 Erlangen, Germany.
authors.forename: Andrei
authors.initials: A
authors.lastname: Ghicov
authors.forename: Masahiro
authors.initials: M
authors.lastname: Yamamoto
authors.forename: Patrik
authors.initials: P
authors.lastname: Schmuki