Journal
LANGMUIR
Volume 25, Issue 3, Pages 1526-1528Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la803223r
Keywords
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Funding
- Center for Frontier Materials and Micro/Nano Science and Technology Center
- National Cheng Kung University, Taiwan [D97-2700]
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This study investigated the adhesion (pull-off) force and contact angles of a water strider's leg. During hydrostatic experiments, the adhesion force was found to be 2 dyn. The image of a cross section of a live leg contacted with a deformed water surface provided the contact angle of 168.8 degrees. A numerical scheme was proposed to determine the water surface on a groove wall of a seta. The results showed that the asperities of a seta are almost wetted, and the fraction of the wetted projection area was 0.69. Thus, the contact angle of a seta was 124.8 degrees.
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