Adhesion forces and contact angles of water strider legs

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

doi:10.1021/la803223r

Adhesion forces and contact angles of water strider legs

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

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	1526-1528
Number of pages	3
Journal	Langmuir
Volume	25
Issue number	3
DOIs	https://doi.org/10.1021/la803223r
Publication status	Published - 2009 Feb 3

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la803223r

Cite this

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AB - 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°.

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Adhesion forces and contact angles of water strider legs

Abstract

All Science Journal Classification (ASJC) codes

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