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Related Experiment Video

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A Multi-Scale Cross-Band Defense System Integrating Decoupled Visible, Dynamic Infrared Camouflage and

Junlin Liu1, Shujuan Tan2, Xinrui Yang1

  • 1College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People's Republic of China.

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Summary

This study introduces a novel composite material for advanced cross-band camouflage. It integrates infrared emissivity switching and visible light concealment, enhancing survivability for personnel and equipment.

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Adaptive IR camouflageCu2O/CNT composite filmEMI shieldingElectrothermal energy conversionVisible camouflage

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Optoelectronics

Background:

  • Evolving surveillance systems necessitate advanced camouflage solutions for personnel and equipment.
  • Traditional camouflage methods often face trade-offs between visible light concealment and infrared (IR) stealth.
  • Existing technologies struggle to provide multi-functional protection across different spectral bands.

Purpose of the Study:

  • To develop a novel layer-structured composite system for effective cross-band camouflage.
  • To achieve simultaneous visible and infrared spectrum concealment.
  • To integrate electromagnetic interference shielding and energy management capabilities into a single platform.

Main Methods:

  • Fabrication of a carbon nanotube (CNT) film composite with an ionic liquid (IL) interlayer.
  • Engineering of copper(II) oxide (Cu2O) nanoparticles for visible camouflage.
  • Characterization of IR emissivity switching via ion intercalation/deintercalation.
  • Evaluation of visible color generation and IR transmittance of the Cu2O nanoparticle layer.

Main Results:

  • The CNT/IL/CNT architecture demonstrated reversible IR emissivity switching (Δε≈0.55) within 2 seconds.
  • Spray-coated Cu2O nanoparticles provided rich structural colors with 90% IR transmittance, decoupling visible and IR properties.
  • The composite system exhibited excellent electrical conductivity, enabling simultaneous electromagnetic interference shielding and electrothermal energy conversion.
  • The integrated system showed long-term operational stability.

Conclusions:

  • The developed spectral-decoupling design overcomes limitations of traditional camouflage systems.
  • This lightweight, multi-functional platform unifies visible-IR camouflage, electromagnetic protection, and energy management.
  • The technology presents a significant advancement and a new paradigm for cross-band camouflage applications.