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. 2020 Sep 8;11:4492. doi: 10.1038/s41467-020-17951-6

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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. 2 — a High-magnification dark-field TEM image of a type I fibre (Li₃N core and an LiOH outer layer) and b corresponding SAED pattern in the < $\bar{1}$ 2 $\bar{1}$ 0> projection demonstrating the <10 $\bar{1}$ 0> nanofibre growth direction; c bright-field TEM image of a type II fibre and d corresponding SAED pattern in the <01 $\bar{1}$ 0> projection (with arcs due to an LiOH surface layer) showing the <0001> growth direction. Scale bars in a and c correspond to 500 nm.