Abstract
Next-generation communications and camouflage systems require secure information transmission without electromagnetic exposure. Radiation-stealth metasurfaces offer a promising route toward this goal, yet radiation and scattering remain intrinsically entangled, compelling existing approaches to segregate them into orthogonal polarizations or disjoint frequency bands. This fundamentally restricts polarization controllability and spectral coexistence, leaving concurrent full-polarization stealth and radiation control within a shared spectrum unachieved. Here, we propose multigroup metasurface ensembles where cooperative interlayer interactions fully decouple radiation regulation from scattering suppression, enabling dynamic chiral radiation while preserving invisibility to arbitrary polarizations across an overlapping spectrum. By leveraging two independent geometric phases to break the conjugation constraint between radiated and scattered spin waves, along with a customized feed-addressing strategy, desired spin radiation is channeled into tunable directions, with cross-polarized scattering effectively suppressed via destructive interference. Meanwhile, reciprocity ensures that co-polarized illumination passes through the multilayer metasurfaces and is dissipated by the embedded feed network, yielding full-polarization invisibility. To validate the concept, its versatile radiation-stealth functionalities, including multifunctional chiral beam scanning and full-polarization invisibility, are experimentally demonstrated. Our methodology unlocks new opportunities for secure satellite links, low-altitude networks, and covert tactical communications, providing a versatile foundation for next-generation aerospace and wireless infrastructures.
NETL
NSTL
Wiley