Surface Tension and Stability of a Nanobubble in Water: Molecular Simulation
Molecular dynamics simulations were carried out for a nanoscale spherical bubble in water at room temperature. The pressure difference between inside and outside of the bubble was investigated and the surface tension was evaluated with assumption of the Young-Laplace (Y-L) equation. The obtained sur...
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2008-11-01
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| Series: | Journal of Fluid Science and Technology |
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| Online Access: | https://www.jstage.jst.go.jp/article/jfst/3/8/3_8_922/_pdf/-char/en |
| _version_ | 1798020956823748608 |
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| author | Mitsuhiro MATSUMOTO |
| author_facet | Mitsuhiro MATSUMOTO |
| author_sort | Mitsuhiro MATSUMOTO |
| collection | DOAJ |
| description | Molecular dynamics simulations were carried out for a nanoscale spherical bubble in water at room temperature. The pressure difference between inside and outside of the bubble was investigated and the surface tension was evaluated with assumption of the Young-Laplace (Y-L) equation. The obtained surface tension shows little dependence on the bubble size and agrees with that of flat surface. Thus it is confirmed that the Y-L equation holds for nanobubbles in water. Based on the Y-L equation and the density-dependence of the liquid pressure, mechanical stability of a bubble in a finite system was discussed. The existence of mechanical instability leads to a mechanical definition of critical nucleus size in cavitation nucleation. |
| first_indexed | 2024-04-11T17:06:08Z |
| format | Article |
| id | doaj.art-b27837dfb8204fa0a4aaedd9cd9e2c8b |
| institution | Directory Open Access Journal |
| issn | 1880-5558 |
| language | English |
| last_indexed | 2024-04-11T17:06:08Z |
| publishDate | 2008-11-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Fluid Science and Technology |
| spelling | doaj.art-b27837dfb8204fa0a4aaedd9cd9e2c8b2022-12-22T04:13:01ZengThe Japan Society of Mechanical EngineersJournal of Fluid Science and Technology1880-55582008-11-013892292910.1299/jfst.3.922jfstSurface Tension and Stability of a Nanobubble in Water: Molecular SimulationMitsuhiro MATSUMOTO0Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto UniversityMolecular dynamics simulations were carried out for a nanoscale spherical bubble in water at room temperature. The pressure difference between inside and outside of the bubble was investigated and the surface tension was evaluated with assumption of the Young-Laplace (Y-L) equation. The obtained surface tension shows little dependence on the bubble size and agrees with that of flat surface. Thus it is confirmed that the Y-L equation holds for nanobubbles in water. Based on the Y-L equation and the density-dependence of the liquid pressure, mechanical stability of a bubble in a finite system was discussed. The existence of mechanical instability leads to a mechanical definition of critical nucleus size in cavitation nucleation.https://www.jstage.jst.go.jp/article/jfst/3/8/3_8_922/_pdf/-char/enmicrobubblenanobubblesurface tensionyoung-laplace equationbubble nucleationmolecular simulation |
| spellingShingle | Mitsuhiro MATSUMOTO Surface Tension and Stability of a Nanobubble in Water: Molecular Simulation Journal of Fluid Science and Technology microbubble nanobubble surface tension young-laplace equation bubble nucleation molecular simulation |
| title | Surface Tension and Stability of a Nanobubble in Water: Molecular Simulation |
| title_full | Surface Tension and Stability of a Nanobubble in Water: Molecular Simulation |
| title_fullStr | Surface Tension and Stability of a Nanobubble in Water: Molecular Simulation |
| title_full_unstemmed | Surface Tension and Stability of a Nanobubble in Water: Molecular Simulation |
| title_short | Surface Tension and Stability of a Nanobubble in Water: Molecular Simulation |
| title_sort | surface tension and stability of a nanobubble in water molecular simulation |
| topic | microbubble nanobubble surface tension young-laplace equation bubble nucleation molecular simulation |
| url | https://www.jstage.jst.go.jp/article/jfst/3/8/3_8_922/_pdf/-char/en |
| work_keys_str_mv | AT mitsuhiromatsumoto surfacetensionandstabilityofananobubbleinwatermolecularsimulation |