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Related Concept Videos

Mechanical Systems01:22

Mechanical Systems

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 described...

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Related Experiment Video

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Bioinspired Soft Robot with Incorporated Microelectrodes
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Bioinspired Photodriven Camouflaged Soft Robot.

Jianhua Hao1, He Ma1, Yuan Li1

  • 1Institute of Information Photonics and School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, P. R. China.

ACS Applied Materials & Interfaces
|July 17, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed advanced bionic robots with active camouflage using a tunable W-VO2 cavity and MXene/paraffin film. These durable, shape-changing robots offer superior camouflage for military and environmental applications.

Keywords:
MXenecamouflagephase changesoft robotvanadium dioxide

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Area of Science:

  • Robotics and Materials Science
  • Optoelectronics and Nanotechnology

Background:

  • Soft bionic robots are crucial for hazardous environments, necessitating effective active camouflage.
  • Dynamic structural colors offer durable, tunable camouflage but integration with soft robots is challenging.

Purpose of the Study:

  • To develop camouflaged soft bionic robots by integrating tunable structural colors with actuation capabilities.
  • To create a durable, responsive camouflage system for soft robots inspired by natural examples.

Main Methods:

  • Fabrication of a tunable lossy cavity using tungsten-doped vanadium dioxide (W-VO2) and an oxide/fluoride layer.
  • Development of an actuating film using MXene/paraffin for color-changing skin.
  • Integration of the W-VO2 cavity and actuating film onto soft robot surfaces.

Main Results:

  • The W-VO2 based system exhibited tunable optical properties in response to stimuli (heating, laser, sunlight), enabling color change.
  • The all-inorganic camouflage skin demonstrated a lifetime exceeding 20,000 cycles.
  • The camouflaged robots showed significant shape change, rapid response, and low power consumption.

Conclusions:

  • The developed bionic robots successfully integrate dynamic structural color camouflage with soft robotics actuation.
  • The all-inorganic, durable camouflage system is suitable for visible and infrared spectrum blending.
  • These robots show significant potential for military reconnaissance, environmental monitoring, and other applications requiring adaptive camouflage.