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Title:	Photoactive rolled-up TiO2 microtubes: fabrication, characterization and applications
Author:	Giudicatti, Silvia; Marz, Sonja M.; Soler Turu, Lluís; Madani, Abbas; Jorgensen, Matthew R.; Sanchez, Samuel; Schmidt, Oliver G.
Other authors:	Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques
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.
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria dels materials -Titanium -Nanotechnology -Surface-area -Acetic-acid -Nanotubes -Titania -Annealing -Micromotors -Anatase -Thin films -Titani -Nanotecnologia
Rights:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Published version Article
Published by:	Royal Society of Chemistry
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