Published in

Wiley, Advanced Functional Materials, 49(33), 2023

DOI: 10.1002/adfm.202306422

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Nanoimprint Meta‐Device for Chiral Imaging

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractThe polarization of light is a valuable information channel that has been studied extensively in optical devices. There has been limited progress in developing low‐refractive index contrast and large‐scale chiral meta‐devices that are easy to integrate and mass‐produce. In this image, a chiral imaging meta‐device with a large area and broadband chirality control is experimentally demonstrated. The centimeter‐scale Moiré meta‐device is achieved using nanoimprint technology. The Poynting vector and singularity features in the near field and chiral optical response in the far field are discussed. The proposed Moiré meta‐devices can achieve circular dichroism (CD) of more than 10%. Further chiral imaging harnessing CD mechanisms are demonstrated, which may lead to significant potential in various fields, including encryption and security, materials science, biochemistry, and medicine.