title: Correlation lengths, porosity and water adsorption in TiO₂ thin films prepared by glancing angle deposition.
abstract: This paper reports a thorough microstructural characterization of  glancing angle deposited (GLAD) TiO(2) thin films. Atomic force microscopy (afm), grazing-incidence small-angle x-ray scattering (GISAXS) and water adsorption isotherms have been used to determine the evolution of porosity and the existence of some correlation distances between the nanocolumns constituting the basic elements of the film's nanostructure. It is found that the deposition angle and, to a lesser extent, the film thickness are the most important parameters controlling properties of the thin film. The importance of porosity and some critical dimensions encountered in the investigated GLAD thin films is highlighted in relation to the analysis of their optical properties when utilized as antireflective coatings or as hosts and templates for the development of new composite materials.
authors.affiliation: Instituto de Ciencia de Materiales de Sevilla (CSIC-Universidade Sevilla), Avenida Américo Vespucio 49, 41092 Sevilla, Spain.
authors.forename: Lola
authors.initials: L
authors.lastname: González-García
authors.forename: Julián
authors.initials: J
authors.lastname: Parra-Barranco
authors.forename: Juan R
authors.initials: JR
authors.lastname: Sánchez-Valencia
authors.forename: Angel
authors.initials: A
authors.lastname: Barranco
authors.forename: Ana
authors.initials: A
authors.lastname: Borrás
authors.forename: Agustín R
authors.initials: AR
authors.lastname: González-Elipe
authors.forename: Mari-Cruz
authors.initials: MC
authors.lastname: García-Gutiérrez
authors.forename: Jaime J
authors.initials: JJ
authors.lastname: Hernández
authors.forename: Daniel R
authors.initials: DR
authors.lastname: Rueda
authors.forename: Tiberio A
authors.initials: TA
authors.lastname: Ezquerra
mesh_terms: D000327:Adsorption; D008422:Materials Testing; D008567:Membranes, Artificial; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D016062:Porosity; D012031:Refractometry / Q000379:methods*; D013223:Statistics as Topic; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D008567:Membranes, Artificial; D014867:Water; C009495:titanium dioxide; D014025:Titanium