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. 2017 Apr 24;7:46739. doi: 10.1038/srep46739

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Copyright © 2017, The Author(s)

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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(a) Schematic process to fabricate semi-transparent Ag interconnectors (horseshoe, U-shape, and zigzag patterns) on wavy-patterned PDMS substrate with a smooth buckling. (b) Surface and (c) cross-sectional FESEM images of the wavy-patterned PDMS substrates fabricated at a constant pre-strain of 20% as a function of UV/ozone treatment time (40, 50, 60 min).