Search Results (16)
Moderately porous zirconia ceramics for dental applications
This doctoral thesis describes the preparation of moderately porous Y-TZP ceramics with improved flexural strength. The main field of application is dentistry, where the elastic mismatch between the Y-TZP material and tooth substance influences the survival rate of fixed partial dentures (FPDs). By introducing porosity into the bulk samples a …
Functionalization of magnetic nanoparticles for biomedical applications
The application of magnetic nanoparticles in biomedicine dictates the preparation of properly arranged nanoparticles. The preparation of a stable colloidal suspension of nanoparticles in complex biological media is a prerequisite for all types of applications. Depending on the type of application, the proper coating, functionalization and (bio)conjugation of the nanoparticles …
Innovative electroconductive ceramic composites based on Si3N4
This thesis describes an investigation of electrically conductive composites based on Si3N4 with dispersed TiN or ZrN particles fabricated by an in-situ composite method. The influence of the amount of conductive phase of the Si3N4/TiN and Si3N4/ZrN composites on the density, the flexural strength and the electrical conductivity were evaluated. …
Effect of ingested nanofibers and nanoparticles on digestive gland epithelium of a model test organism
Engineered nanofibers and nanoparticles are recognized as capable of inducing cellular perturbations according to the oxidative stress paradigm or by interacting directly with biological membranes. A number of authors in their investigations with the nanofibres and nanoparticles has reported the ability of nanofibers and nanotparticle to cause the different damage …
Functionalization of Magnetic Nanoparticles
In my doctoral dissertation, I primarily devoted my attention to the modifying surface properties of superparamagnetic maghemite nanoparticles. Superparamagnetic maghemite nanoparticles were synthesized using co-precipitation method from an aqueous solution of Fe (II) and Fe (III) ions. The size of the nanoparticles was controlled with aging time at pH = …
The hydrolysis of AlN powder and its use for the synthesys of nanostructured alumina coatings
he thesis describes a study of aluminum nitride (AlN) powder hydrolysis in the temperature range between 5 °C and 90 °C. The analysis of the temperature dependence of the course of the hydrolysis and the reaction kinetics, along with a mechanistic model set up for the hydrolysis reactions, gives a …