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. 2016 Feb 18;6:21258. doi: 10.1038/srep21258

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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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(a,b) Sequential images showing the UV-polymerization procedure of SIMs fabricated with (a) CR 1 and (b) CR 3 pre-gel solutions. Dotted circles: mask patterns to protect UV irradiation. (c,d) Confocal microscopic images of the fabricated SIMs in (a,b), respectively. (e,f) Cross-sectional images of the SIMs extracted from the horizontal dotted line in (c,d), respectively. (g) Variations in the average thickness of the frame (H₁), base (H₂), and bottom (H₃) parts. Scale bar: 1 mm.