Coarsening behavior of bulk nanobubbles in water

Abstract In recent years, minuscule gas bubbles called bulk nanobubbles (BNBs) have drawn increasing attention due to their unique properties and broad applicability in various technological fields, such as biomedical engineering, water treatment, nanomaterials. However, questions remain regarding the stability behavior of BNBs. present work, BNBs were generated using a gas–liquid mixing method. NB analysis was performed nanoparticle tracking (NTA) method investigate coarsening over time. The diameters increased, cubic radii increased linearly (r 3 ~ t) While concentration decreased, total volume remained same. size distribution broadened, larger These results indicate that relatively small disappeared dissolution grew through mass transfer between instead coalescence. other words, underwent Ostwald ripening: molecules from smaller diffused continuous phase be absorbed into