Collected in this journal's volume articles describe the research results of microstructure and magnetic properties of nanocrystalline intermetallic compound as a function of milling time in the mechanical alloying; the influence of phase separation effect in gelation of bioactive glass on morphology the end product and process of preparation the fluoro-hydroxyapatite ceramics, which are intended for use in the biomedical practice for bone treatment. The photocatalytic properties of nanostructured zinc oxide for degradation of methylene blue dye were also studied. This volume will be helpful to a wide range of engineers and scientists whose activity is related to the usage of nanomaterials and nanotechnologies.