期刊
LANGMUIR
卷 27, 期 8, 页码 4742-4748出版社
AMER CHEMICAL SOC
DOI: 10.1021/la2001249
关键词
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资金
- Padua University [CPDA077281/07]
- Fondazione CARI-PARO
We report results of extensive experimental and numerical studies on the suspension of water drops deposited on cylindrical pillars having circular and square cross sections and different wettabilities. In the case of circular pillars, the drop contact line is pinned to the whole edge contour until the drop collapses due to the action of gravity. In contrast, on square pillars, the drops are suspended on the four corners and spilling along the vertical walls is observed. We have also studied the ability of the two geometries to, sustain drops and found that if we compare pillars with the same characteristic size, the square is more efficient in pinning large volumes, while if we normalize the volumes to pillar areas, the opposite is true.
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