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Zero curvature-surface driven small objects
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DOI：10.1063/1.4996758.png)
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摘要
En 中文
In this study, we investigate the spontaneous migration of small objects driven by surface tension on a catenoid, formed by a layer of soap constrained by two rings. Although the average curvature of the catenoid is zero at each point, the small objects always migrate to the position near the ring. The force and energy analyses have been performed to uncover the mechanism, and it is found that the small objects distort the local shape of the liquid film, thus making the whole system energetically favorable. These findings provide some inspiration to design microfluidics, aquatic robotics, and miniature boats. Published by AIP Publishing.
Keyword:
MENISCUS
WATER
PARTICLES
HYDRODYNAMICS
INTERFACES
MIGRATION
DROPLETS
WALKING
MOTION
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