Η επίδραση της τασιενεργής ουσίας Ακεταλδεΰδης στη δημιουργία πυρήνων συμπύκνωσης νεφών (CCN) στην ατμόσφαιρα

Abstract

This thesis refers to the theoretical study and design of a model in a 3D graphical environment using specialized software. The basic principles of Molecular Mechanics and Dynamics are applied. The study at hand is focused on the study of the interactions between the surfactant acetaldehyde and salt morphology within atmospheric aerosols towards the formation of cloud condensation nuclei (CCN). At first the basic theoretical background necessary for understanding the methods employed in the thesis is given. The surfactant compound acetaldehyde is presented, as well as its effect in the formation of cloud condensation nuclei upon the interaction within aerosols in the atmosphere. The theoretical background of Molecular Dynamics simulations is also given, including the interactions between atoms in a system. Reference is also made to the methodology used, the calculations and finally an analysis of the results is presented. Through this analysis we can elucidate the dynamics of the first steps in CCN formation and growth in the presence of organic matter.