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. 2020 Aug 21;11:4209. doi: 10.1038/s41467-020-18109-0

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© The Author(s) 2020

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. 3 — a–c Near-field images of the normalized amplitude s(ω) showing moiré patterns in TBG taken at same position with different excitation frequencies. The twisted angle is ~0.05°. d–f Near-field images of the normalized amplitude s(ω) showing different twisted angles of 0.06°, 0.11° and 0.21° at excitation frequency ω = 1560 cm⁻¹. Scale bars are 500 nm.