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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: Int J Pharm. 2018 Sep 27;552(1-2):217–224. doi: 10.1016/j.ijpharm.2018.09.065

Figure 1. Effect of cylinder size on rhodamine release from TPP woodpile structures.

Figure 1.

A-C: 3D models of woodpile structures with designed cylinder diameters and cylinder spacing of 5, 10 or 15 μm, respectively. D-F: Representative scanning electron micrographs of the corresponding poly(ethylene glycol) woodpile structures. Scale bars represent 25 μm. G: Release profiles (data points) and best-fit Korsmeyer-Peppas regression curves (lines) of rhodamine B diffusion from the devices shown in A-F. Error bars represent standard error of the mean; n=3.