We have fabricated chiral WS₂ rolls that utilize a chiral superstructure to address the lack of chirality in traditional two-dimensional materials. This structure exhibits responsiveness to both linearly polarized light and circularly polarized light. This unique combination enables the development of circular/linear polarization-sensitive photodetectors. Our data demonstrate that chiral WS₂ rolls exhibit robust linear/circular polarization responsiveness. Compared to traditional circular/linear polarization-sensitive photodetectors, this approach simplifies device fabrication and miniaturization, making it a promising optoelectronic material. The ability to effectively detect both linearly polarized light (LPL) and circularly polarized light (CPL) enhances the versatility of these devices, paving the way for innovative applications in optical sensing and communication. Overall, chiral WS₂ rolls represent a significant advancement in the field of optoelectronics, offering potential improvements in performance and functionality.

“Chiral-induced spin selectivity (CISS)” and its device applications are predominantly at the experimental stage, with mechanisms not fully understood. There is a need for new chiral materials with simple structures and high room-temperature electron spin polarization rates, crucial for theoretical studies and low-power spin optoelectronic devices. This study examines the CISS effect in carbon nanotubes, graphene chiral rolls, and graphene chiral stacks. While all three exhibit chirality, only the one-side follow curved surface of the graphene rolls demonstrates the CISS effect. Using true and false chirality analysis from Professor Barron, we found that only the charge motion (current) on the chiral surface is true chiral, leading to spin polarization. Thus, the CISS phenomenon occurs when charge motion on the chiral surface is chiral. Both chiral surface structures and chiral charge motion are necessary for electron spin polarization. Further theoretical validation of these conditions will enhance CISS theory.