High‐Contrast, Dynamic Visible‐Infrared Regulator for Adaptive Multispectral and Multipixelated Camouflage

ABSTRACT

Dynamic regulation of optical properties in visible (VIS) and infrared (IR) simultaneously is vital for camouflage, energy harvesting, information display, and thermal management. However, current approaches cannot achieve high‐contrast, versatile modulation of visible colors and infrared emissivity concurrently, essential for emerging applications like adaptive camouflage in multiple scenarios. To address this challenge, here we develop a novel dynamic VIS‐IR regulator based on the reversible metal electrodeposition (RMED) technology, whose reconfigurable nanoscale metallic layer, combined with judiciously designed photonic electrodes, permits real‐time, precise control of excitation/annihilation of asymmetric lossy Fabry–Pérot resonances. As a result of this strategy, our regulator shows unprecedented performance, which can not only generate diverse structural colors with a large color gamut (∼33% sRGB area) and high color switching contrast (up to 83%), but also realize broadband, large‐contrast IR emissivity modulation of Δ ε _{3‐14 µm} ∼0.68. We further demonstrate a highly‐programmable multipixelated device, where each pixel can be controlled independently, enabling spatially adaptive multispectral camouflage and information display for the first time. This work offers a remarkably designable, exactly controllable, and highly scalable platform for multispectral dynamic optical regulation, with wide‐ranging applications in adaptive camouflage systems, information encryption and optical skin.