
1.College of Engineering and Applied Sciences, MOE Key Laboratory of Intelligent Optical Sensing and Manipulation, Nanjing university, Nanjing, 210023, China
2.State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, 210093, China
3.Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210023, China
Jie Bian (0335021w@163.com)
Weihua Zhang (zwh@nju.edu.cn)
Published:30 April 2022,
Published Online:18 March 2022,
Received:03 October 2021,
Revised:21 February 2022,
Accepted:27 February 2022
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Zhou, S. et al. Polarization-dispersive imaging spectrometer for scattering circular dichroism spectroscopy of single chiral nanostructures. Light: Science & Applications, 11, 608-614 (2022).
Zhou, S. et al. Polarization-dispersive imaging spectrometer for scattering circular dichroism spectroscopy of single chiral nanostructures. Light: Science & Applications, 11, 608-614 (2022). DOI: 10.1038/s41377-022-00755-2.
Circular dichroism spectroscopy is one of the most important tools in nanoscopic chiroptics. However
there is lack of simple
fast and reliable method for measuring the circular dichroism responses of single nanostructures. To tackle this issue
we report a polarization-dispersive imaging spectrometer which is capable of measuring the scattering circular dichroism response of a single chiral nanostructure with a single shot. Using this technique
we studied the scattering circular dichroism spectra of a model system
the vertically coupled plasmonic nanorod pair. Both experimental and theoretical results indicate that the polarization-dispersive spectrometer measures the imaginary part of nonlocal susceptibility of the structure. We further applied the technique to 3-dimensional Au nanorod structures assembled on DNA origami templates together with correlated scanning electron microscopic measurements. Rich chiroptical phenomena were unveiled at the single nanostructure level.
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