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. Author manuscript; available in PMC: 2014 Aug 4.
Published in final edited form as: Biomaterials. 2011 Sep 28;32(36):9584–9593. doi: 10.1016/j.biomaterials.2011.09.006

Figure 1.

Figure 1

Microfabricated PDMS micropost arrays to engineer substrate rigidity and adhesive ECM patterns. (a–d) Representative scanning electron microscopy (SEM) images of hexagonally arranged silicon micropost masters. a and b show two masters sharing the same post diameter D of 0.8 µm and center-to-center (c.t.c.) distance S of 2 µm, while c and d are two masters with the same post diameter D of 1.83 µm and c.t.c distance S of 4 µm. (e) Dependence of effective modulus Eeff of the PDMS micropost array on the post height L (blue: D=0.8 µm, S=2 µm; red: D=1.83 µm, S=4 µm). (f) Table summarizing different geometrical factors and their associated mechanical and adhesive properties of the PDMS micropost arrays. Asterisks (*) in e and f mark the chosen PDMS micropost arrays with similar Eeff for comparative morphological studies in this work.