Chirality encoding in resonant metasurfaces governed by lattice symmetries
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(Published version)
Date
2025
Authors
Sinev, I.
Richter, F.U.
Toftul, I.
Glebov, N.
Koshelev, K.
Hwang, Y.
Lancaster, D.G.
Kivshar, Y.
Altug, H.
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Journal article
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Nature Communications, 2025; 16(1, article no. 6091):1-10
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Abstract
Chiral metasurfaces provide invaluable tools for controlling structured light required for biosensing, photochemistry, holography, and quantum photonics. Here we suggest and realize a universal strategy for engineering chiral response of resonant metasurfaces via the interplay of meta-atom geometry and lattice arrangements within all five possible planar Bravais symmetries. By introducing chiral gradient metasurfaces, we illustrate how our approach allows producing a predictable chiral response tunable by simple parameter variations. We highlight that the symmetry-controlled chiral response provides an additional degree of freedom in optical signal processing, and showcase this with simultaneous mid-IR image encoding in two fundamental quantities, transmission and circular dichroism. Our proposed concept represents a universal toolkit for on-demand design and control of chiral metastructures that has potential for numerous applications in life sciences, quantum optics and more.
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Data source: supplementary information, https://doi.org/10.1038/s41467-025-61221-2
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Copyright 2025 The Authors. (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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