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説明:

Optical chirality has been extensively explored in chiral molecules, helical structures, and metasurfaces with bound states in the continuum. Attempts to attain chirality have mainly relied on human intuition and ideas. Here, we show various types of single-layer silicon-nanostructured metasurfaces exhibiting prominent circular dichroism (CD) containing perfect, broadband, and opposite CD responses at short near-infrared wavelengths. The designs were obtained based on a generative-AI-assisted structural search for chiral metasurfaces, enabling a series of non-empirical structural searches beyond the boundary of human knowledge and experience. The physical mechanisms yielding the outstanding CD responses are elucidated from detailed insights into subwavelength electromagnetic dynamics in the single-layer metasurfaces. Furthermore, we experimentally demonstrate several metasurfaces. This type of single-layer thin CD metasurfaces serves as a key element in the development of compact optical-wave-manipulating devices at telecommunication bands.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: chiral metasurface, single-layer metasurface, silicon, circular dichroism, generative AI

刊行年月日: 2026-11-11

出版者: American Chemical Society (ACS)

掲載誌:

• NANO LETTERS (ISSN: 15306984) vol. 26 issue. 44 p. 15483-15489

研究助成金:

• Japan Society for the Promotion of Science JP24H01389
• National Institute for Materials Science

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1021/acs.nanolett.6c04776

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更新時刻: 2026-11-12 09:24:04 +0900

MDRでの公開時刻: 2026-11-12 10:43:31 +0900