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

Figure 7. SIMs with inscribed letters were fabricated with CR 3 pre-gel solution by using the photomask shown in the inset.

Figure 7

(a) Optical images of the fabricated SIM. The bottom part was fabricated under a pattern of 260 μm width, and the pores were formed under the pattern of 520 μm width. (b) Optical image of the membrane heated to temperatures higher than LCST; the pores opened to show letters “POSTECH” clearly. (c) Radius expansion ratios of vertical slit pores over angle intervals of 45°. Scale bar: 1 mm.