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Crystallographic unit cell structure of TiO2 with A) rutile and B) anatase structures. Copyright © 2003, Cangiani. Adapted with permission from Cangiani G. Ab Initio Study of the Properties of TiO2 Rutile and Anatase Polytypes. Lausanne, France: Faculté des sciences de base, Ecole polytechnique fédérale de Lausanne EPFL; 2003.
