Nucleation threshold and deactivation mechanisms of nanoscopic cavitation nuclei

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dc.contributor.authorBorkent, Bram M.
dc.contributor.authorGekle, Stephan
dc.contributor.authorProsperetti, Andrea
dc.contributor.authorLohse, Detlef
dc.date.accessioned2020-03-10T19:14:34Z
dc.date.available2020-03-10T19:14:34Z
dc.date.issued10/19/2009
dc.description.abstractThe acoustic nucleation threshold for bubbles trapped in cavities has theoretically been predicted within the crevice theory by Atchley and Prosperetti [“The crevice model of bubble nucleation,” J. Acoust. Soc. Am. 86, 1065 (1989)]. Here, we determine this threshold experimentally, by applying a single pressure pulse to bubbles trapped in cylindrical nanoscopic pits (“artificial crevices”) with radii down to 50 nm. By decreasing the minimum pressure stepwise, we observe the threshold for which the bubbles start to nucleate. The experimental results are quantitatively in good agreement with the theoretical predictions of Atchley and Prosperetti. In addition, we provide the mechanism which explains the deactivation of cavitation nuclei: gas diffusion together with an aspherical bubble collapse. Finally, we present superhydrophobic nuclei which cannot be deactivated, unless with a high-speed liquid jet directed into the pit.
dc.identifier.citationCopyright 2009 Physics of Fluids. Recommended citation: Borkent, Bram M., Stephan Gekle, Andrea Prosperetti, and Detlef Lohse. "Nucleation threshold and deactivation mechanisms of nanoscopic cavitation nuclei." Physics of fluids 21, no. 10 (2009): 102003. DOI: 10.1063/1.3249602 URL: https://aip.scitation.org/doi/abs/10.1063/1.3249602 Reproduced in accordance with the original publisher’s licensing terms and with permission from the author(s).
dc.identifier.urihttps://hdl.handle.net/10657/6132
dc.language.isoen_US
dc.publisherThe Physics of Fluids
dc.subjectPlasma processing
dc.subjectLiquids
dc.subjectCavitation bubbles
dc.subjectBubble dynamics
dc.subjectInorganic compounds
dc.subjectFluid jets
dc.titleNucleation threshold and deactivation mechanisms of nanoscopic cavitation nuclei
dc.typearticle

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