Two Worlds of Stealth: Why Hiding from Thermal Cameras Demands an Entirely Different Physics
Metamaterials and adaptive coatings have made impressive strides in manipulating visible light, yet infrared imaging systems operate on radiative emission principles that render most optical camouflage strategies effectively useless. Understanding why thermal stealth has resisted the same engineering breakthroughs—and what emerging dual-spectrum research may eventually offer—reveals one of the more consequential unsolved problems in applied photonics.