Chiral metasurfaces have wide applications in chiral sensing and functional devices, such as ultrathin circular polarizers. Metamaterial is an artificially engineered material made of a subwavelength metal/dielectric structure resonantly coupled to an electromagnetic field. In article number 1901448, shengyan yang, changzhi gu and co‐workers have developed a novel folded metamaterial that possesses gigantic intrinsic 3d chirality and.
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In this review, we collated the latest advances in metasurface polarization devices and selected some representative works for detailed presentations.
