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. 2015 Jul 24;5:12341. doi: 10.1038/srep12341

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Copyright © 2015, Macmillan Publishers Limited

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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AFM images of (a) a DWNT used as the starting material, (b) a dGNR obtained by the unzipping of the DWNT, (c) the region at which the dGNR splits into two sGNRs, (d) a resulting sGNR. Each scale bar is 50 nm. (e) Line profile of the dGNR in (c), obtained along the line A-A′. The height and width of the dGNR are 1.64 nm and 33.8 nm, respectively. (e) Line profile of the dGNR in (c), obtained along the line B-B′. The height and width of the sGNR on the left are 0.87 nm and 31.2 nm, respectively, and those of the sGNR on the right are 0.62 nm and 34.2 nm, respectively. The insets in (a,b,d) show the height profile along the white line in each case. The images (a–d) correspond to different samples.