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Tri-spectral decoupled programmable thermal emitter for multimode camouflage with heterogeneous phase-change

Sihong Zhou1,2,3, Shikui Dong1,2, Jiameng Song1,2

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This study presents a novel tri-spectral thermal emitter for advanced camouflage. The device offers tunable optical properties across visible and infrared spectra for enhanced stealth capabilities.

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Area of Science:

  • Materials Science
  • Optics
  • Nanotechnology

Background:

  • Effective camouflage requires matching optical properties across visible and infrared spectra.
  • Current technologies struggle to address multi-spectral detection (visible, short-wave infrared, long-wave infrared).

Purpose of the Study:

  • To design and optimize a tri-spectral decoupled thermal emitter for advanced camouflage applications.
  • To achieve independent control over visible and infrared optical characteristics.

Main Methods:

  • Utilized a heterogeneous integrated phase-change material (PCM) multilayer structure.
  • Incorporated vanadium dioxide (VO2) and In3SbTe2 (IST) for tunable emissivity.
  • Designed for structural color generation in the visible range.

Main Results:

  • Demonstrated theoretical structural colors across the visible spectrum.
  • Achieved independently programmable emissivity modulation up to 80% in two infrared regions.
  • Proposed methods for deceptive thermal camouflage and disorientation.

Conclusions:

  • The developed thermal emitter provides a flexible and near-perfect solution for multi-spectral camouflage.
  • Enables advanced camouflage by generating confusing visual and infrared signatures.
  • Offers potential for next-generation stealth technologies in complex environments.