Walking of spider on water surface studied from its leg shadows

doi:10.1088/1674-1056/27/8/084702

中国物理B ›› 2018, Vol. 27 ›› Issue (8): 84702-084702.doi: 10.1088/1674-1056/27/8/084702

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Walking of spider on water surface studied from its leg shadows

Yelong Zheng(郑叶龙), Hongyu Lu(鲁鸿宇), Jile Jiang(蒋继乐), Dashuai Tao(陶大帅), Wei Yin(尹维), Yu Tian(田煜)

1 State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China;
2 Division of Mechanics and Acoustics, National Institute of Metrology, Beijing 100029, China

收稿日期:2017-12-05 修回日期:2018-04-08 出版日期:2018-08-05 发布日期:2018-08-05
通讯作者: Yu Tian E-mail:tianyu@tsinghua.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51323006 and 51425502) and the Tribology Science Fund of State Key Laboratory of Tribology (Grant No. SKLTKF17B18).

Walking of spider on water surface studied from its leg shadows

Yelong Zheng(郑叶龙)¹, Hongyu Lu(鲁鸿宇)¹, Jile Jiang(蒋继乐)², Dashuai Tao(陶大帅)¹, Wei Yin(尹维)¹, Yu Tian(田煜)¹

1 State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China;
2 Division of Mechanics and Acoustics, National Institute of Metrology, Beijing 100029, China

Received:2017-12-05 Revised:2018-04-08 Online:2018-08-05 Published:2018-08-05
Contact: Yu Tian E-mail:tianyu@tsinghua.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51323006 and 51425502) and the Tribology Science Fund of State Key Laboratory of Tribology (Grant No. SKLTKF17B18).

摘要/Abstract

摘要： Different from sculling forward of water striders with their hairy water-repellent legs, water spiders walked very quickly on water surfaces. By using a shadow method, the walking of water spiders had been studied. The three-dimensional trajectories and the supporting forces of water spider legs during walking forward were achieved. Results showed that the leg movement could be divided into three phases:slap, stroke, and retrieve. Employing an effective strategy to improving walking efficiency, the sculling legs supported most of its body weight while other legs were lifted to reduce the lateral water resistance, which was similar to the strategy of water striders. These findings could help guiding the design of water walking robots with high efficiency.

关键词: water spider legs, shadow, walking forward, archimedes', principle

Abstract: Different from sculling forward of water striders with their hairy water-repellent legs, water spiders walked very quickly on water surfaces. By using a shadow method, the walking of water spiders had been studied. The three-dimensional trajectories and the supporting forces of water spider legs during walking forward were achieved. Results showed that the leg movement could be divided into three phases:slap, stroke, and retrieve. Employing an effective strategy to improving walking efficiency, the sculling legs supported most of its body weight while other legs were lifted to reduce the lateral water resistance, which was similar to the strategy of water striders. These findings could help guiding the design of water walking robots with high efficiency.

Key words: water spider legs, shadow, walking forward, archimedes', principle

中图分类号: (Breakup and coalescence)

47.55.df

47.55.D- (Drops and bubbles) 68.03.-g (Gas-liquid and vacuum-liquid interfaces)

郑叶龙, 鲁鸿宇, 蒋继乐, 陶大帅, 尹维, 田煜. Walking of spider on water surface studied from its leg shadows[J]. 中国物理B, 2018, 27(8): 84702-084702.

Yelong Zheng(郑叶龙), Hongyu Lu(鲁鸿宇), Jile Jiang(蒋继乐), Dashuai Tao(陶大帅), Wei Yin(尹维), Yu Tian(田煜). Walking of spider on water surface studied from its leg shadows[J]. Chin. Phys. B, 2018, 27(8): 84702-084702.

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Walking of spider on water surface studied from its leg shadows

Walking of spider on water surface studied from its leg shadows

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