Multifunctional integrated metamaterials for radar-infrared-visible compatible multispectral stealth.

Area of Science:

• Materials Science
• Electromagnetics
• Optics

Background:

• Metamaterials enable advanced stealth technologies due to unique electromagnetic properties.
• Existing transparent multispectral stealth solutions face limitations in thickness and transparency due to complex designs.

Purpose of the Study:

• To develop an integrated metamaterial for high-transparency, multispectral stealth.
• To overcome the thickness and transparency limitations of current stealth metamaterials.

Main Methods:

• Proposed an ITO/dielectric/ITO sandwich structure.
• Utilized the upper ITO layer as a resonator for microwave absorption.
• Engineered a high filling ratio in the ITO layer to suppress infrared radiation.

Main Results:

• Achieved over 90% microwave absorption across 8-18 GHz.
• Demonstrated an infrared emissivity of approximately 0.36 (3-14 µm).
• Obtained an average optical transmittance of 74.1% (380-800 nm) with a thickness of 2.4 mm.

Conclusions:

• The proposed metamaterial offers effective multispectral stealth with high transparency.
• The integrated design overcomes previous limitations in thickness and transparency.
• Potential applications include advanced stealth and camouflage systems.