THIS SEMINAR WAS ORGANIZED BY NORDITA SOFT MATTER The zoom link : https://stockholmuniversity.zoom.us/j/61540388020 Meeting ID: 615 4038 8020
Abstract: When a particle is placed in a material with a lower bulk melting temperature, intermolecular forces can lead to the existence of a “premelted” liquid film of the lower melting temperature material. An imposed temperature gradient drive the translation of the particle by a process of melting and refreezing known as “thermal regelation”. In this talk, I will discuss the calculation of the rate of regelation of spherical particles surrounded by premelted films that contain ionic impurities. I will show that the impurities enhance the rate of regelation and discuss its influence on the dynamics of single particles and distributions of particles, Finally, I will talk about the consequences of thermal regelation in the context of dating of ice cores.