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<p>Soft robots capable of navigating complex environments hold promise for minimally invasive medical procedures and micromanipulation tasks. Here, we present a magnetically controlled multi-legged soft robot inspired by green sea turtle locomotion. Our designed robot, featuring six magnetized feet, demonstrates stable motion within a magnetic field strength range of 1.84–6.44 mT. Locomotion displacement scales linearly with field strength, while velocity correlates with frequency, reaching approximately 25&#xa0;mm/s at 10&#xa0;Hz. The robot navigates dry, semi-submerged, and fully submerged conditions, climbs slopes up to 30°, and maneuvers through U-shaped bends. Additionally, we demonstrate the robot's capability to smoothly transition between terrestrial and aquatic environments, demonstrating its amphibious locomotion performance. This adaptability to diverse environments, coupled with precise magnetic control, opens new possibilities for soft robotics in confined and complex spaces. Our findings provide a framework for designing highly maneuverable small-scale soft robots with potential applications ranging from targeted drug delivery to environmental sensing in challenging terrains.</p>

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Sea Turtle-inspired Magnetic Soft Robot Demonstrates Versatile Land-to-Submerged Locomotion

  • 期刊论文

  • 发表日期：

    2025年4月15日

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  • Yida Guo,
  • Jia Zhu,
  • Yutong Wang,
  • Lei Zhang,
  • Shichuan Wang,
  • Binhong Dou,
  • Shenghao Yang,
  • Bing Li,
  • Fuzhou Niu,
  • Chonglei Hao

摘要

Soft robots capable of navigating complex environments hold promise for minimally invasive medical procedures and micromanipulation tasks. Here, we present a magnetically controlled multi-legged soft robot inspired by green sea turtle locomotion. Our designed robot, featuring six magnetized feet, demonstrates stable motion within a magnetic field strength range of 1.84–6.44 mT. Locomotion displacement scales linearly with field strength, while velocity correlates with frequency, reaching approximately 25 mm/s at 10 Hz. The robot navigates dry, semi-submerged, and fully submerged conditions, climbs slopes up to 30°, and maneuvers through U-shaped bends. Additionally, we demonstrate the robot's capability to smoothly transition between terrestrial and aquatic environments, demonstrating its amphibious locomotion performance. This adaptability to diverse environments, coupled with precise magnetic control, opens new possibilities for soft robotics in confined and complex spaces. Our findings provide a framework for designing highly maneuverable small-scale soft robots with potential applications ranging from targeted drug delivery to environmental sensing in challenging terrains.