Droplet plume emission during plasmonic bubble growth in ternary liquids
| Autor: | Xiaolai Li, Yuliang Wang, Harold J.W. Zandvliet, Kai Leong Chong, Roberto Verzicco, Detlef Lohse, Yibo Chen |
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| Přispěvatelé: | MESA+ Institute, Physics of Fluids, Physics of Interfaces and Nanomaterials, Max Planck Center |
| Rok vydání: | 2021 |
| Předmět: |
Chemical Physics (physics.chem-ph)
Materials science 76-05 Bubble Evaporation Nucleation Mixing (process engineering) Fluid Dynamics (physics.flu-dyn) FOS: Physical sciences Marangoni number Settore ING-IND/06 Physics - Fluid Dynamics Plume Physics::Fluid Dynamics Ouzo effect Chemical physics Physics - Chemical Physics Ternary operation |
| Zdroj: | PHYSICAL REVIEW E Physical Review E, 104(2):025101. American Physical Society |
| ISSN: | 2470-0045 |
| DOI: | 10.48550/arxiv.2110.09964 |
| Popis: | Plasmonic bubbles are of great relevance in numerous applications, including catalytic reactions, micro/nanomanipulation of molecules or particles dispersed in liquids, and cancer therapeutics. So far, studies have been focused on bubble nucleation in pure liquids. Here we investigate plasmonic bubble nucleation in ternary liquids consisting of ethanol, water, and trans-anethole oil which can show the so-called ouzo-effect. We find that oil (trans-anethole) droplet plumes are produced around the growing plasmonic bubbles. The nucleation of the microdroplets and their organization in droplet plumes is due to the symmetry breaking of the ethanol concentration field during the selective evaporation of ethanol from the surrounding ternary liquids into the growing plasmonic bubbles. Numerical simulations show the existence of a critical Marangoni number Ma (the ratio between solutal advection rate and the diffusion rate), above which the symmetry breaking of the ethanol concentration field occurs, leading to the emission of the droplet plumes. The numerical results agree with the experimental observation that more plumes are emitted with increasing ethanol-water relative weight ratios and hence Ma. Our findings on the droplet plume formation reveal the rich phenomena of plasmonic bubble nucleation in multicomponent liquids and help to pave the way to achieve enhanced mixing in multicomponent liquids in chemical, pharmaceutical, and cosmetic industries. Comment: 28 pages,12 figures |
| Databáze: | OpenAIRE |
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