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Related Concept Videos

Mechanical Systems01:22

Mechanical Systems

288
Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
288

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Bio-inspired multimodal soft actuator with environmental self-adaptation.

Chi Chen1, Zixiao Liu1, Pengju Shi1

  • 1Department of Material Science and Engineering, University of California, Los Angeles, CA, USA.

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|August 15, 2025
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This study presents a novel light-responsive soft actuator inspired by marine life. This adaptable robot self-switches between three motion modes, enhancing autonomy for changing environments.

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Area of Science:

  • Robotics
  • Materials Science
  • Biomimicry

Background:

  • Autonomous soft robots offer self-sustained motion but lack adaptive multi-modal capabilities.
  • Current systems require human intervention for mode switching, limiting environmental responsiveness.

Purpose of the Study:

  • To develop a soft actuator with intrinsic multi-modal actuation and self-adaptation.
  • To mimic the adaptive locomotion strategies observed in Gymnura micrura.

Main Methods:

  • Engineered asymmetry and dynamic structure in a light-responsive soft actuator.
  • Integrated two distinct built-in feedback mechanisms governed by intrinsic bifurcation.
  • Demonstrated self-adaptation to varying light intensity, viscosity, temperature, and physical contact.

Main Results:

  • The soft actuator seamlessly switched between tracking, undulation, and oscillation motion modes.
  • Achieved self-adaptation to diverse environmental stimuli without external intervention.
  • Showcased potential applications in fluid dynamics, electronics, and environmental monitoring.

Conclusions:

  • This advancement in physical intelligence represents a significant step toward next-generation autonomous soft robotic systems.
  • The developed actuator exhibits unprecedented adaptive behaviors and higher-level autonomy.
  • Multimodal capabilities expand robotic applications beyond locomotion.