this studies concern formation and synthesis of nanoparticles and nanocomposites. Radiation 
synthesis of copper, silver and nanoparticles of other metals is studied. Metal and salt–polymer 
composites are synthesized by this method. Metal sulphide semiconductors of nanometric matrices are 
prepared using gamma irradiation of a suitable solution of monomer, sulphur and metal sources. These 
products find application in photoluminescent, photoelectric and non-linear optic materials. 
An interesting field of radiation nanotechnological application concerns the development of PCcontrolled biochips for programmed release systems. Nano-ordered hydrogels based on natural 
polymers as polysaccharides (hyaluronic acid, agrose, starch, chitosan) and proteins (keratin, soybean) 
are potential responsive materials for such biochips and sensors. The nano approach to these biological 
materials should be developed further. Studies on natural and thermoplastic natural rubber-clay 
composites have given promising results. Nanomaterials with high abrasion and high scratch 
resistance will find industrial applications