ArticleiScience2023
Tunable circular conversion dichroism of single-layer twisted graphene-patterned metasurface.
Article in iScience, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 16 citations in OpenAlex.
- Article
- Chirality Engineering and Properties in Two-Dimensional Layered Materials.Small (Weinheim an der Bergstrasse, Germany) · 2026Review
- Time-domain adjoint optimization for metalens design toward enhanced broadband efficiency and uniformity.iScience · 2025Article
- Flexible terahertz beam manipulation and convolution operations in light-controllable digital coding metasurfaces.iScience · 2025Article
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Authors and funding
6 authors at 2 institutions in 1 country.
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Abstract
Two-dimensional (2D) chirality-induced asymmetric transmission/reflection has great potential for polarization applications. Usually, asymmetric effects resulting from circular conversion dichroism (CCD) occur in chiral metasurfaces. Here, we propose a single-layer twisted graphene-patterned (with tilted elliptical hole arrays) metasurface and theoretically reveal its tunable CCD in the terahertz (THz) region. The unit cell of the metasurface is achiral. Merely by altering the in-plane orientation of holes for structural 2D chirality, a tunable CCD can be achieved at normal incidence. Interestingly, the reflection phase can be considered an intuitive method to show this metasurface's anisotropy, which complements the conventional CCD measurement in characterizing chiral materials. Furthermore, we can achieve active CCD based on the tunability of graphene. Due to the Fabry-Pérot resonance, a multiband enhancement of CCD spectrum will happen by changing the dielectric layer thickness. The proposed metasurface provides more flexible opportunities for designing active THz devices for polarization manipulation.
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