Stretchable Cephalopod-Inspired Multimodal Camouflage Systems.

Area of Science:

• Materials Science
• Optoelectronics
• Biomimicry

Background:

• Soft, deformable materials for light manipulation are crucial for sensing, optoelectronics, and thermal management.
• Developing such materials with multispectral control remains a significant challenge.

Purpose of the Study:

• To engineer cephalopod-inspired adaptive camouflage platforms with multispectral light manipulation capabilities.
• To overcome limitations in current light-controlling soft materials.

Main Methods:

• Fabrication of stretchable copolymer membranes with high protonic conductivity.
• Characterization of electrical properties under extreme mechanical strain (up to 500%).
• Integration of membranes into mechanically and electrically actuated camouflage devices.

Main Results:

• Developed membranes with conductivity up to ≈90 mS cm⁻¹ and ≈80% increase at 200% strain.
• Achieved >3000-fold and >4-fold modulation of visible and IR transmittance ratios, respectively.
• Demonstrated rapid response times (≈0.6 s) and durability over repeated actuation.

Conclusions:

• Successfully created multispectral adaptive camouflage platforms inspired by cephalopods.
• The developed materials and devices offer unprecedented control over visible and infrared light propagation.
• Potential applications span adaptive optics, photonics, sensing, and thermal management.