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Hierarchical surface patterns, inspired by the carapace surfaces of marine decapod crab Myomenippe hardwickii, consisting of two overlapping hexagonal arrays of 100 μm cylinders and 3 μm (a, b) and 5 μm diameter pillars (c), respectively, reproduced in PU using compression molding. The scale bars correspond to 100 (a), 50 (b), and 50 μm (c), respectively.
