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. Author manuscript; available in PMC: 2014 Nov 11.
Published in final edited form as: Small. 2013 May 8;9(21):3704–3713. doi: 10.1002/smll.201202075

Figure 3.

Figure 3

A) Schematic of an axial mechanical test setup to assess MN device performance with two horizontal parallel plates. B) (i) and (ii) Digital images of pyramid and a cone shaped needles, respectively, before and after mechanical testing. C) A single needle compression test that breaks around 225 mN during compression. D) Fracture force of all sub-groups of the pyramid and the cone shaped MN fabricated by micromolding. (N = 10, error bars represent standard deviations) Significant effects are indicated by one (p < 0.05) or two stars (p < 0.01), the one start belong to same group and two stars belong to second group on the bases of 95% confidence interval using ANOVA.