Capillary-Induced Motion of Particles Bridging Interfaces of a Free-Standing Thin Liquid Film
We demonstrate a new form of capillary force experienced by neutrally buoyant spherical particles adsorbed simultaneously at both interfaces of a thin liquid film of spatially varying thickness. The force is proportional to the slope of the interface and the difference between the local contact angl...
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| Veröffentlicht in: | Physical review letters 2019-03, Vol.122 (9), p.098001-098001, Article 098001 |
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| container_issue | 9 |
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| container_title | Physical review letters |
| container_volume | 122 |
| creator | Yadav, Abhishek Hinch, E John Tirumkudulu, Mahesh S |
| description | We demonstrate a new form of capillary force experienced by neutrally buoyant spherical particles adsorbed simultaneously at both interfaces of a thin liquid film of spatially varying thickness. The force is proportional to the slope of the interface and the difference between the local contact angle and the equilibrium value, and exists even when the two bounding interfaces have zero curvature. We derive the expression for the force, which when balanced against the hydrodynamic drag gives the trajectory of the particle. The measured trajectories for spherical particles of varying diameters in thin films compare well with predictions. |
| doi_str_mv | 10.1103/PhysRevLett.122.098001 |
| format | Article |
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| ispartof | Physical review letters, 2019-03, Vol.122 (9), p.098001-098001, Article 098001 |
| issn | 0031-9007 1079-7114 |
| language | eng |
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| source | American Physical Society Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Contact angle Curvature Thickness Thin films Trajectory measurement |
| title | Capillary-Induced Motion of Particles Bridging Interfaces of a Free-Standing Thin Liquid Film |
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