20.500.12556/RUL-169772 Time-resolved dynamics and characteristics of laser-generated nanobubbles in a colloidal suspension Hypothesis: Colloidal suspensions act as stabilizer agents against dissolution of bubbles, as well as interaction points for laser generation of nanobubbles. Gold nanoparticles were chosen as a well understood model colloid to study characteristics of laser-generated nanobubbles in a colloidal suspension. We hypothesise that the time-resolved dynamics of nanobubbles in existing works do not yet reflect the complete nanobubble dynamics and properties. Advancement in the field is possible by improving the understanding of interfacial phenomena, both interaction between colloids and laser light and nanobubbles on colloids. Experiments and simulations: We developed a method for analysing the lifecycle of nanobubbles starting with their laser-induced generation, following through with their initial oscillation until their dissolution using contactless optical methods. The work combines laser-generation of nanobubbles, their controlled expansion with isolated negative pressure shock waves, and Gilmore-model supported radius reconstruction. Findings: This experimental approach enabled us to reconstruct initial nanobubble sizes right after generation and their time evolution through the initial oscillation, recognizing the physical mechanisms behind the measured nanobubble properties. Threshold for nanobubble generation as well as nanobubble dissolution time as a function of colloid size was determined, and the efficiency of nanobubble generation with respect to the laser light intensity was measured. We demonstrate the capability to measure both the initial nanosecond scale nanobubble dynamics after laser-generation and their later dissolution on micro- to millisecond scales with a single method. The study advances the field of laser-generated nanobubbles with further implications for controlled nanobubble seeding in various environments. nanobubbles laser breakdown shock waves laser illumination colloidal suspension laser-induced bubbles gold nanoparticles bubble nucleation nanomehurčki laserski preboj udarni val lasersko osvetljevanje koloidna suspenzija true false true Angleški jezik Slovenski jezik Članek v reviji 2025-06-10 12:54:21 2025-06-10 12:54:30 2026-07-07 04:16:49 0000-00-00 00:00:00 2025 0 0 10 str. art. 137977 Vol. 697 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.375.826:535 1095-7103 10.1016/j.jcis.2025.137977 238900483 RAZ_Jelencic_Miha_2025.pdf RAZ_Jelencic_Miha_2025.pdf 1 FF3A4EED8B24BCADD0383FC8C609D33C de3d7b047bb24661a4a192343ce5d21abf4b8637793133ef910bb2e455150cc8 215568d5-45ec-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=211470 https://www.sciencedirect.com/science/article/pii/S0021979725013682 0 cd33ff05-45e7-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=211468 Fakulteta za strojništvo 0 0 0