Radice, S. Dietsch, Hervé Mischler, S. Michler, J. 2009-11-10 Titanium is an interesting material for biomedical implants thanks to its physical and chemical properties. In particular, TiO₂ coatings with a surface characterized by micro-patterning combined with nano-topography are extremely attractive for orthopaedic implants in terms of enhanced osteointegration and consequently improved implant fixation. In the present work, a new method for the preparation of TiO₂ multi-scale structured coatings is presented. This method is based on three steps. Firstly, monodispersed polystyrene (PS) microsized beads are functionalized with TiO₂ submicron particles by a wet process involving a cationic polyelectrolyte. Secondly, the resulting TiO₂-PS composite particles in suspension are used to prepare coatings by electrophoretic deposition (EPD), a simple and flexible electrochemical technique. The EPD is performed cathodically, avoiding uncontrolled oxidation of the substrate. Finally, after removal of the PS spacers during the sintering process, TiO₂ coatings with a combined micro- and nano-topography are achieved from deposits thicker than 100 µm. This achievement presents two relevant aspects: potential applications of the multi-scale structured TiO₂ surfaces (particularly in the biomedical field); the simplicity and flexibility of the process used. application/pdf https://folia.unifr.ch/global/documents/301654 https://folia.unifr.ch/documents/301654/files/die_edf.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1016/j.surfcoat.2009.11.001 info:eu-repo/semantics/openAccess License undefined Surface and Coatings Technology. - 2010, vol. 204, no. 11, p. 1749-1754 Titania Topography Particle Functionalization EPD info:eu-repo/classification/udc/54 Electrophoretic deposition of functionalized polystyrene particles for TiO₂ multi-scale structured surfaces http://purl.org/coar/resource_type/c_6501