The articles in this book summarize the work presented at the mid-term workshop of the COST (European Cooperation in the Fields of Scientific and Technical Research) action on Nanostructured Materials, which was held in October 2001 in Limerick, Ireland.The collection gives an excellent overview of the state-of-the-art, topical research areas in this field, and the progress made by the coordinated research projects. The articles cover synthesis, physical properties and characterization of nanostructured materials, such as magnetic and ferroelectric nanoparticles, nanoparticles in biological systems, metallic nanoparticles, nanocomposites, particle-reinforced polymers, semiconductor nanoparticles and thin films.The articles in this book summarize the work presented at the mid-term workshop of the COST (European Cooperation in the Fields of Scientific and Technical Research) action on Nanostructured Materials, which was held in October 2001 in Limerick, Ireland.The collection gives an excellent overview of the state-of-the-art, topical research areas in this field, and the progress made by the coordinated research projects. The articles cover synthesis, physical properties and characterization of nanostructured materials, such as magnetic and ferroelectric nanoparticles, nanoparticles in biological systems, metallic nanoparticles, nanocomposites, particle-reinforced polymers, semiconductor nanoparticles and thin films.Invited Review: (`afar?k I., `afar?kov? M.) Magnetic Nanoparticles and Biosciences; Contributions: (Cihlar J., Castkova K.) Direct Synthesis of Nanocrystalline Hydroxyapatite by Hydrothermal Hydrolysis of Alkylphosphates.- (Fendrych F., Kraus L., Chayka O., Lobotka P., Vavra I., Tous J., Studnicka V., Frait Z.) Preparation of Nanostructured Magnetic Films by the Plasma Jet Technique.- (Buckley D. N., Harvey E., Chu S.-N. G.) Growth of Anodic Films on Compound Semiconductor Electrodes: InP in Aqueous (NH4)2S.- (Cernansk? M., Van?k P., Kr?l K., Krupkov? R.l“%