“…However, due to metal absorption loss, the efficiency is limited. In recent years, lossless dielectric chiral metasurfaces have attracted much attention and utilized to achieve low loss, high refractive index, large field enhancement, excitation of high-order Mie resonance modes, or more efficient optical manipulation with higher degrees of freedom, and many structures with outstanding performance have been designed [19][20][21][22][23][24][25][26][27]. These lossless ultra-thin chiral metasurface structures were small in size, high in efficiency, and rich in functions, and can be used for detection of chiral substances, as well as metalenses toreplace the traditional large-volume optical components, such as lenses, polarizers, quarter glass slides, etc.…”