title: Photoactive rolled-up TiO2microtubes: fabrication, characterization and applications†Electronic supplementary information (ESI) available. See DOI: 10.1039/c4tc00796dClick here for additional data file.
abstract: Because of its unique properties, titania (TiO2) represents a promising candidate in a wide variety of research fields. In this paper, some of the properties and potential applications of titania within rolled-up nanotechnology are explored. It is shown how the structural and optical properties of rolled titania microtubes can be controlled by properly tuning the microfabrication parameters. The rolling up of titania films on different sacrificial layers and containing different shapes, achieving a control on the diameter of the fabricated titania microtubes, is presented. In order to obtain the more photoactive crystalline form of titania, one during-fabrication and two post-fabrication methods are demonstrated. Interesting applications in the fields of photocatalysis and photonics are suggested: the use of titania rolled-up microtubes as micromotors and optical microresonators is presented.
authors.affiliation: Institute for Integrative Nanosciences , IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany . Email: s.giudicatti@ifw-dresden.de ; Email: sanchez@is.mpg.de.
authors.forename: Silvia
authors.initials: S
authors.lastname: Giudicatti
authors.affiliation: Institute for Integrative Nanosciences , IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany . Email: s.giudicatti@ifw-dresden.de ; Email: sanchez@is.mpg.de.
authors.forename: Sonja M
authors.initials: SM
authors.lastname: Marz
authors.affiliation: Institute for Integrative Nanosciences , IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany . Email: s.giudicatti@ifw-dresden.de ; Email: sanchez@is.mpg.de ; Max Planck Institute for Intelligent Systems , Heisenbergstraße 3 , 70569 Stuttgart , Germany.
authors.forename: Lluís
authors.initials: L
authors.lastname: Soler
authors.affiliation: Institute for Integrative Nanosciences , IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany . Email: s.giudicatti@ifw-dresden.de ; Email: sanchez@is.mpg.de.
authors.forename: Abbas
authors.initials: A
authors.lastname: Madani
authors.affiliation: Institute for Integrative Nanosciences , IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany . Email: s.giudicatti@ifw-dresden.de ; Email: sanchez@is.mpg.de.
authors.forename: Matthew R
authors.initials: MR
authors.lastname: Jorgensen
authors.affiliation: Institute for Integrative Nanosciences , IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany . Email: s.giudicatti@ifw-dresden.de ; Email: sanchez@is.mpg.de ; Max Planck Institute for Intelligent Systems , Heisenbergstraße 3 , 70569 Stuttgart , Germany.
authors.forename: Samuel
authors.initials: S
authors.lastname: Sanchez
authors.affiliation: Institute for Integrative Nanosciences , IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany . Email: s.giudicatti@ifw-dresden.de ; Email: sanchez@is.mpg.de ; Material Systems for Nanoelectronics , Chemnitz University of Technology , Reichenhainer Straße 70 , 09107 Chemnitz , Germany.
authors.forename: Oliver G
authors.initials: OG
authors.lastname: Schmidt