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. 2017 Nov 13;7:15436. doi: 10.1038/s41598-017-15698-7

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© The Author(s) 2017

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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COMSOL® finite-element simulation results, fabricated serrated teeth, and electrospinning results from (A1–A5) [2.5 mm, 10 mm, 60°]; (B1–B5) [2.5 mm, 7.5 mm, 60°]; and (C1–C5) [2.5 mm, 5 mm, 60°] collector deigns; where (A1,B1,C1) are simulated electric potential contour; (A2,B2,C2) are simulated electric field profiles; (A3,B3,C3) are zoomed-in images of electric potential contour near each tooth; (A4,B4,C4) are fabricated serrated teeth; and (A5,B5,C5) are images³³ (© 2016 IEEE) of fibers collected by each respective collector. (scale bar = 5 mm).