RT journal article T1 Direct sub-nanometer scale electron microscopy analysis of anion incorporation to self-ordered anodic alumina layers A1 González Rovira, Leandro A1 López Haro, Miguel A1 Hungría Hernández, Ana Belén A1 El Amrani, K. A1 Sánchez Amaya, José María A1 Calvino Gámez, José Juan A1 Botana Pedemonte, Francisco Javier A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica AB Ordered porous alumina layers prepared by two-step anodising in phosphoric, oxalic and sulphuric acidshave been characterized at sub-nanometer scale using electron microscopy techniques. FEG-SEM andSTEM-HAADF images allowed estimating the pore size, cell wall and pore wall thicknesses of the layers.Nanoanalytical characterization has been performed by STEM-EELS and STEM-X-EDS. Detailed features ofthe spatial distribution of anions in the pore wall of the films have been obtained. Maximum concentrationof P-species occurs, approximately, at the middle of the pore wall; adjacent to the pore for C-species,whereas the distribution of S-species appears to be uniform. PB Elsevier SN 0010-938X YR 2010 FD 2010 LK http://hdl.handle.net/10498/30345 UL http://hdl.handle.net/10498/30345 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 06-nov-2026