Coarsening of quasi two-dimensional emulsions formed by islands in free-standing smectic films

Chemphyschem. 2024 Mar 26:e202400166. doi: 10.1002/cphc.202400166. Online ahead of print.ABSTRACTWe study the coarsening behavior of assemblies of islands on smectic A freely suspended films in ISS microgravity experiments. The islands can be regarded as liquid inclusions in a two-dimensional fluid in analogy to liquid droplets of the discontinuous phase of an emulsion. The coarsening is effectuated by two processes, predominantly by island coalescence, but to some extend also by Ostwald ripening, whereby large islands grow at the expense of surrounding smaller ones. A peculiarity of this system is that the continuous and the discontinuous phases consist of the same material. We determine the dynamics, analyze the self-similar aging of the island size distribution and discuss characteristic exponents of the mean island growth.PMID:38529677 | DOI:10.1002/cphc.202400166

Source: Chemphyschem - March 26, 2024 Category: Chemistry Authors: Christoph Klopp Torsten Trittel Ralf Stannarius Source Type: research