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. 2017 Jan 20;7:41049. doi: 10.1038/srep41049

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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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SEM images taken from the fracture surfaces of pyrolyzed sample: (a) pores from top portion; (b) cross section showing the aligned channels; (c) channel strut detail; (d) magnified strut view; (e) closed magnification view of pore surface.