Synthesis of biomaterials for medical applications

The main issues that are investigated in our laboratory is the hydrothermal growth of hydroxyapatite (HAp) coatings on titanium substrates for biomedical applications. For its favorable biological properties, i.e. high biocompatibility and bioactivity, HAp is considered to be an attractive coating material for metallic orthopedic implants. However, the structural and morphological properties of HAp crystals grown under hydrothermal conditions are strongly influenced by the synthesis parameters as well as the surface characteristics of titanium substrate. Therefore, our work is focused on understanding HAp crystallization processes from supersaturated solution in order to synthesize crystals with tailored properties.

The  investigations are also focused on studies of coatings of carbon or titanium. For fabrication of  coatings the IBSD or IBAD methods are applied. Bioactive a-C:Me and TiNX:Me coatings are formed on polymer surfaces or on special  surgical steels. The hip joint acetabulum with C:Ag coating is shown below.

The hip joint acetabulum covered with a-C:Ag coating.