| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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A Source for the Excellent Floating Ability of a Water Strider |
| LIU Shuang, LIU Zhan-Wei**, SHI Wen-Xiong |
School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081
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| Cite this article: |
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LIU Shuang, LIU Zhan-Wei, SHI Wen-Xiong 2014 Chin. Phys. Lett. 31 106801 |
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Abstract A water strider's floating mechanism is of significance for the design of new biomimetic robots. However, the explanation of this mechanism has not been fully comprehended due to a lack of effective experimental methods. We describe a novel transmission speckle correlation technique, which is used to determine the deformation of liquid surfaces caused by a resting water strider, as well as a calculation of the resulting forces in the vertical direction. Furthermore, the variation of the liquid surface morphology at different times in the process of a water strider being unconscious has been measured and analyzed. The results show that the wax material secreted by water striders is a vital source for the excellent floating ability of a water strider, and that the effective time of the wax is less than 2 h.
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Published: 31 October 2014
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| PACS: |
68.08.De
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(Liquid-solid interface structure: measurements and simulations)
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42.87.-d
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(Optical testing techniques)
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68.03.Cd
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(Surface tension and related phenomena)
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