CONTRIBUŢII LA TEORIA RELAXĂRII STĂRILOR METASTABILE ÎN LICHIDE SUBRĂCITE ŞI STICLE

Florentin PALADI Catedra Fizicǎ Teoreticǎ

Abstract

The theory of phase transitions in supercooled liquids and glasses based on the cluster concept, and taken into account the recent discovery of the generation and extinction of crystal nuclei in supercooled liquids at very low temperatures, has been developed. In particular, the generation and extinction of nuclei was found at low temperatures in supercooled liquids of o-benzylphenol, salol and 2,2’-dihydroxybenzophenone, and was brought a new concept of irreversible structural relaxation in supercooled liquids and glasses. The practical value of this research is determined by the importance of understanding the connection between physical properties, microscopic structure of the substance and macroscopic conditions of materials processing, which is vital to produce new materials with advanced technological properties. However, the results allow to formulate the essence of a new research development in the study of complex cluster systems by methods of statistical physics, numerical calculation and computer modeling.