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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
1Key Laboratory of Aerospace Thermophysics of Ministry of Industry and Information Technology, Harbin 150001, China. shuaiyong@hit.edu.cn.
Nanoscale
|May 6, 2025
Summary
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.
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.
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