Chiral-magic angle of nanoimprint meta-device

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

7 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)2479–2490
Journal / PublicationNanophotonics
Volume12
Issue number13
Online published18 Jan 2023
Publication statusPublished - Jun 2023

Link(s)

Abstract

The magic angle of Twistronics has attracted a lot of attention because of its peculiar electrical characteristics. Moiré patterns formed by the superlattice of a twisted bilayer change overall physical properties. Circular dichroism can also be manipulated through the generated moiré pattern. Here, we report a polymer-based twisted bilayer meta-device fabricated by multilayer nanoimprint technology and study the magic angle of chirality. The superlattice of the bilayer meta-device creates moiré patterns and brings unique chiral optical responses. The bilayer nanoimprint technology is developed for metasurfaces with relative twist angles. Via the twist angle control, polymer materials with a low refractive index can manipulate the electric field of the light and reveal the chiral magic angle. Moreover, the shape of the meta-atoms plays a key role in chiral magic angle tuning. The chirality engineering by the reported nanoimprint technology and chiral meta-devices may contribute to applications in chiral imaging, biomedical sensing, lasing, and tunable optical devices. © 2023 the author(s).

Research Area(s)

  • chirality, meta-device, metasurface, Moirépatterns, nanoimprint, twisted bilayer meta-devices

Citation Format(s)

Chiral-magic angle of nanoimprint meta-device. / Chen, Mu Ku ; Zhang, Jing Cheng; Leung, Cheuk Wai et al.
In: Nanophotonics, Vol. 12, No. 13, 06.2023, p. 2479–2490.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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