Asymmetry of Structural and Electrophysical Properties of Symmetrical Titania Nanotubes as a Result of Modification with Barium Titanate oleh Elizaveta Konstantinova, Vladimir Zaitsev, Ekaterina Kytina, Mikhail Martyshov, Timofey Savchuk, Danil Butmanov, Daria Dronova, Daria Krupanova, Lidiya Volkova, Andrey Tarasov