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. 2017 Jun 9;7:3204. doi: 10.1038/s41598-017-03591-2

Figure 1.

Figure 1

(a) Top view and (b) 3D view of a unit cell: P = 10 mm, R1 = 0.81 mm, W = 0.3 mm, h = 0.8 mm, R2 = 3.2 mm, L = 2.4 mm.