Multispectral Compatible Stealth Programmable Coding Metasurface with Independent and Dynamic Manipulation of Absorption and Scattering

Multispectral compatible stealth of high-value targets has intrigued long-standing interest in response to the rapid development of multispectral detection technologies, and a series of ingenious metasurfaces profiting from the exotic electromagnetic (EM) property has provided exceptional platforms for realizing multispectral compatible stealth. Nevertheless, most existing multispectral compatible stealth metasurfaces still suffer from the drawback of immutable stealth performance, which tremendously hinders their practical application in various complex scenarios. Herein, an inspiring strategy of the programmable coding metasurface (PCM) with a thickness of approximately 0.1 λ 0 is proposed to fulfill dynamic microwave manipulation, low infrared radiation, and high optical transparency. Owing to continuous amplitude dynamic modulation and 1-bit phase dynamic modulation implemented by adjusting the PIN diodes of well-designed meta-atoms, the proposed PCM is capable of independently and dynamically controlling the absorption intensity and scattering direction of EM waves in broad bandwidth. Simultaneously, the average infrared emissivity of the PCM can be reduced to about 0.25 from 3 to 14 μm, attributed to the low infrared radiation of the surface indium-tin-oxide (ITO) structures, and the optical transparency can reach 65.9% at 565 nm due to the design of the copper mesh structure and the selection of the transparent dielectric substrate. Multitudinous simulations and experiments of the proof-of-concept prototype are in accordance with theoretical predictions and corroborate the effectiveness of our methodology. This remarkable paradigm of the PCM shows unprecedented intelligence and integration in multispectral compatible stealth and may also find potential applications in communication, imaging, and other intelligent metadevices.