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. 2018 Aug 2;8:11623. doi: 10.1038/s41598-018-29977-4

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© The Author(s) 2018

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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Chiral patterning of SOS produced by digitally controlled FIB: (a) SEM-image, normal view, with the FIB paths and directions (curved arrows) and the square unit cell (dashed boundary); (b) SEM-image of the sample tilted by 52°; (c) average surface relief within a unit cell resolved by AFM; (d) 3D-model of the average unit cell.