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DOI	10.1073/pnas.2020055118
	Gigantic vortical differential scattering as a monochromatic probe for multiscale chiral structures
	Ni J.; Liu S.; Wu D.; Lao Z.; Wang Z.; Huang K.; Ji S.; Li J.; Huang Z.; Xiong Q.; Hu Y.; Chu J.; Qiu C.-W.
发表日期	2021
ISSN	00278424
卷号	118 期号:2
英文摘要	Spin angular momentum of light is vital to investigate enantiomers characterized by circular dichroism (CD), widely adopted in biology, chemistry, and material science. However, to discriminate chiral materials with multiscale features, CD spectroscopy normally requires wavelength-swept laser sources as well as wavelength-specific optical accessories. Here, we experimentally demonstrate an orbital-angular-momentum-assisted approach to yield chiroptical signals with monochromatic light. The gigantic vortical differential scattering (VDS) of ∼120% is achieved on intrinsically chiral microstructures fabricated by femtosecond laser. The VDS measurements can robustly generate chiroptical properties on microstructures with varying geometric features (e.g., diameters and helical pitches) and detect chiral molecules with high sensitivity. This VDS scheme lays a paradigm-shift pavement toward efficiently chiroptical discrimination of multiscale chiral structures with photonic orbital angular momentum. It simplifies and complements the conventional CD spectroscopy, opening possibilities for measuring weak optical chirality, especially on mesoscale chiral architectures and macromolecules. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Chiral structure; Optical chirality; Orbital angular momentum; Vortex beam
语种	英语
scopus关键词	Article; chirality; circular dichroism; controlled study; enantiomer; gigantic vortical differential scattering; light related phenomena; mathematical computing; mathematical model; priority journal; sensitivity analysis; spectral sensitivity
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/181084
作者单位	Chinese Academy of Sciences Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230027, China; Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583, Singapore; Department of Optical Engineering, University of Science and Technology of China, Hefei, 230026, China; Key Laboratory of Intelligent Computing and Signal Processing (Ministry of Education), Anhui University, Hefei, 230039, China; Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
推荐引用方式 GB/T 7714	Ni J.,Liu S.,Wu D.,et al. Gigantic vortical differential scattering as a monochromatic probe for multiscale chiral structures[J],2021,118(2).
APA	Ni J..,Liu S..,Wu D..,Lao Z..,Wang Z..,...&Qiu C.-W..(2021).Gigantic vortical differential scattering as a monochromatic probe for multiscale chiral structures.Proceedings of the National Academy of Sciences of the United States of America,118(2).
MLA	Ni J.,et al."Gigantic vortical differential scattering as a monochromatic probe for multiscale chiral structures".Proceedings of the National Academy of Sciences of the United States of America 118.2(2021).