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. 2021 Jun 23;12:3870. doi: 10.1038/s41467-021-24254-x

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a, b AFM images of low and high magnifications. The height profile was taken from a dash line as shown in Supplementary Fig. 5c. c, d Low-magnification HAADF-STEM image and SAED pattern of as-grown polycrystalline 1L WS₂ film. Inset in c is the distribution of grain sizes. e Atomic scale HAADF-STEM image of a typical GB in the polycrystalline 1L WS₂ film, primarily composed of 5|7 rings (purple lines).