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Development of water surface mobile robot inspired by water striders

Development of water surface mobile robot inspired by water striders

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This work describes a water surface mobile robot utilising surface tension forces. Recent biological studies on water striders revealed how they stay afloat and move on the surface of water. By using their hairy legs coated with hydrophobic substance produced, they increase the water repellency and float by the surface tension. This work focuses on understanding the static and dynamic interactions between supporting legs and the surface of water. First, microstructured wire legs were fabricated by using femtosecond laser machining to enhance the water repellency. Then the supporting force, the pull-off force and the drag force were measured to find the suitable legs for water strider robot. Finally, by assembling the legs optimised for supporting load and propulsion, a water strider robot weighing 4.39 g was developed. The robot successfully moved on the surface of water at a speed of 59.2 mm/s.

References

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      • 3. Suzuki, K., Takanobu, H., Noya, K., et al: ‘Water strider robots with microfabricated hydrophobic legs’. IEEE/RSJ Int. Conf. Intelligent Robots and Systems, San Diego, USA, October 2007, pp. 590595.
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      • 4. Ozcan, O., Wang, H., Taylor, J.D., et al: ‘Surface tension driven water strider robot using circular footpads’. 2010 IEEE Int. Conf. Robotics and Automation, Anchorage, USA, May 2010, pp. 37993804.
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      • 10. Fujii, S., Nakamura, T.: ‘Development of an amphibious hexapod robot based on a water strider’. Advances in Climbing and Walking Robots, Proc. Tenth Int. Conf., Singapore, July 2007, pp. 135143.
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      • 12. Iwabe, J., Suzuki, K., Takanobu, H., et al: ‘Biologically inspired water strider robot with microstructured hydrophobic legs’. Proc. Sixth Int. Symp. Aero Aqua Bio-mechanisms, Honolulu, USA, November 2014, pp. 246249.
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      • 13. Tsukakoshi, M., Suzuki, K., Seki, H., et al: ‘Water strider robot with microfabricated hydrophobic legs’. 2012 ASM-ISPS/JSME-IIP Joint Int. Conf. Micromechatronics for Information and Precision Equipment (MIPE2012), Santa Clara, USA, June 2012, pp. 306308.
http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2017.0134
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