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. 2024 Sep 11;8(1):59. doi: 10.1038/s41699-024-00497-2

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© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.

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Fig. 3 — a AFM image of a WSe₂ monolayer flake deposited on the FS nanostructure and false-shading representation (inset). Both the main image and the inset reveal nanowrinkles forming at the vertices, mostly following their directionality. b The corresponding PL image at T = 4 K reveals increased photon emission along the nanowrinkles. The two orthogonal axes are given as a reference for the upcoming polarization-resolved polar plots. Both a and b highlight the collection spots (P1–4) for the polarization-resolved polar plots to follow. c–f Corresponding polar plots of the polarization-resolved PL intensities collected from P1–4, fitted with a sinusoidal function. The calculated degree of linear polarization is 86 ± 2%, 81 ± 2%, 76 ± 3%, and 85 ± 11% for each peak respectively.