Ultrathin 3R-MoS2 metasurfaces with atomically precise edges for efficient nonlinear nanophotonics Article Swipe
George Zograf
,
Betül Küçüköz
,
Alexander Yu. Polyakov
,
Andrew B. Yankovich
,
Alok Ranjan
,
Maria Bancerek
,
Abhay V. Agrawal
,
Eva Olsson
,
Witlef Wieczorek
,
Tomasz J. Antosiewicz
,
Timur Shegai
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1038/s42005-025-02194-y
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1038/s42005-025-02194-y
Dielectric metasurfaces that combine high-index materials with optical nonlinearities are recognized for their potential in quantum and classical nanophotonic applications. However, the fabrication of high-quality metasurfaces poses material-dependent challenges, as their designs are often susceptible to disorder, defects, and scattering losses, mostly occurring at the edges of nanostructured features. Additionally, the choice of the material platforms featuring second-order optical nonlinearities χ (2) , is limited to broken-inversion symmetry crystals such as GaAs, GaP, LiNbO 3 , and various bulk van der Waals materials. Here, we use a combination of top-down lithography and anisotropic wet etching of a specially stacked van der Waals crystal – 3R-MoS 2 , which exhibits both a high refractive index and exceptional χ (2) nonlinearity, to produce ultrathin (~20–25 nm) metasurfaces with atomically sharp edges, where the etching breaks the in-plane symmetry of the meta-atoms. The broken symmetry manifests as a quasi-boundstate-in-the-continuum, enabling the enhancement of second-harmonic generation of three orders of magnitude at specific wavelengths.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1038/s42005-025-02194-y
- https://www.nature.com/articles/s42005-025-02194-y.pdf
- OA Status
- gold
- Cited By
- 7
- References
- 90
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4411923574
All OpenAlex metadata
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- OpenAlex ID
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https://openalex.org/W4411923574Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1038/s42005-025-02194-yDigital Object Identifier
- Title
-
Ultrathin 3R-MoS2 metasurfaces with atomically precise edges for efficient nonlinear nanophotonicsWork title
- Type
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articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2025Year of publication
- Publication date
-
2025-07-02Full publication date if available
- Authors
-
George Zograf, Betül Küçüköz, Alexander Yu. Polyakov, Andrew B. Yankovich, Alok Ranjan, Maria Bancerek, Abhay V. Agrawal, Eva Olsson, Witlef Wieczorek, Tomasz J. Antosiewicz, Timur ShegaiList of authors in order
- Landing page
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https://doi.org/10.1038/s42005-025-02194-yPublisher landing page
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https://www.nature.com/articles/s42005-025-02194-y.pdfDirect link to full text PDF
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YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
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https://www.nature.com/articles/s42005-025-02194-y.pdfDirect OA link when available
- Concepts
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Nanophotonics, Materials science, Optoelectronics, Nonlinear system, Nanotechnology, Nonlinear optical, Nonlinear optics, Optics, Physics, Quantum mechanicsTop concepts (fields/topics) attached by OpenAlex
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7Total citation count in OpenAlex
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2025: 7Per-year citation counts (last 5 years)
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90Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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