Journal
RSC ADVANCES
Volume 4, Issue 67, Pages 35649-35652Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra06428c
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Funding
- National Basic Research Program of China [2013CB328803, 2010CB327705]
- National High Technology Research and Development Program of China [2012AA03A302, 2013AA011004]
- National Natural Science Foundation of China [61306140, 51202028]
- China Postdoctoral Science Foundation [2013M530222]
- Natural Science Foundation of Jiangsu Province [BK20130618]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1301097C]
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This study explores the working mechanism and the influence factor of the pinning effect of advancing sessile droplets on micropillared superhydrophobic surfaces. Our experimental result reflects that the pinning effect of the advancing droplet is determined by a new parameter, which is named the local triple-phase contact line (LTCL). The pinning force is proved proportionate to the maximal value of the LTCL attainable along the actual droplet boundary. Meanwhile, a theoretical model is built to explain the pinning phenomena on various liquid/solid interfaces.
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