20.500.12556/RUL-180946 Sonoluminescence from single cavitation bubbles near solid surfaces Sonoluminescence, the light emission from bubbles undergoing large volume oscillations, has traditionally been associated with near-spherical bubble collapses in free liquid. In contrast, highly asymmetric bubble collapses near solid boundaries are known to cause surface erosion from transient and extreme pressure build ups. While both phenomena are caused from energy focusing during bubble collapse, a connection between erosion and light emission has not been previously reported. Here, we for the first time observe the highly asymmetric toroidal cavitation bubble collapse leading to erosive effects on the nearby boundary emits light, too. Through multi-modal measurements of the bubble dynamics and the associated phenomena near solid surfaces, we find that light emission occurs exclusively at the sites and time of the most intense flow focusing. Yet, we find no correlation between the occurrence of light emission from sonoluminescence and erosion. This findings reveal that the mechanisms governing energy focusing within the bubble and in the liquid are resulting from distinct energy focusing pathways. sonoluminescence cavitation cavitation erosion laser-induced breakdown time-resolved imaging sonoluminiscenca kavitacija kavitacijska erozija laserski preboj časovno razločeno slikanje true false true Angleški jezik Slovenski jezik Članek v reviji 2026-03-20 10:27:19 2026-03-20 10:27:23 2026-03-23 03:49:22 0000-00-00 00:00:00 2026 0 0 7 str. Vol. 128, art. 107815 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 535.37:532.528 1350-4177 10.1016/j.ultsonch.2026.107815 272404227 Mur,_Petkovsek,_Ohl._Sonoluminescence...pdf Mur,_Petkovsek,_Ohl._Sonoluminescence...pdf 1 EF0C7B3E4701B16D5834FCA9B0FCC514 ebcf69d21538e5b16ced842d0939683e3e186f1c431d642eb0cce7ee0bd04aa9 1b69abb4-243f-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=230962 https://www.sciencedirect.com/science/article/pii/S1350417726000805 1 ea2dc5c7-243e-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=230961 Fakulteta za strojništvo 0 0 0