Adhesion forces and contact angles of water strider legs

Pal Jen Wei, Sheng Chao Chen, Jen-Fin Lin

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


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°. 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°.

Original languageEnglish
Pages (from-to)1526-1528
Number of pages3
Issue number3
Publication statusPublished - 2009 Feb 3

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry


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