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Electro-Ribbon Actuator-Driven, Responsive Skating Robot Inspired by Water Striders
Jianhao Liu1, Yangyang Zhao1, Heng Fu1
1School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 31, 2026
Summary
This study presents a lightweight biomimetic water strider robot utilizing surface tension for propulsion. This novel design offers fast response, minimal water disturbance, and reduced energy consumption for environmental monitoring applications.
Area of Science:
- Robotics
- Biomimetics
- Fluid Dynamics
Background:
- Current biomimetic water strider robots often rely on water pressure, leading to surface interference and high energy use.
- Existing designs face limitations in response time and power efficiency for practical applications.
Purpose of the Study:
- To develop a novel, lightweight biomimetic water strider robot driven by surface tension.
- To overcome the limitations of pressure-driven water strider robots, focusing on efficiency and minimal disturbance.
Main Methods:
- Designed a biomimetic water strider robot (1.37 g) using an electro-ribbon actuator for direct leg drive.
- Leveraged surface tension as the primary driving force, eliminating the need for complex transmission systems.
- Evaluated motion stability and performance metrics, including response time and water surface disturbance.
Main Results:
- Achieved a lightweight design (1.37 g) with direct leg drive, minimizing energy loss and mass.
- Demonstrated millisecond-level response time and minimal water surface disturbance (pitch and swing angles < 0.2°).
- Reported a low cost of transportation (1.17 J kg⁻¹m⁻¹), outperforming existing designs.
Conclusions:
- The developed surface tension-dominated water strider robot offers superior performance and efficiency.
- This research provides a foundation for surface tension-driven biomimetic robots and expands electro-ribbon actuator applications.
- The robot's lightweight design and minimal disturbance make it suitable for environmental monitoring and reconnaissance.
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