Figure 1.

The Nichoid scaffold. (A). Pictures of freshly fabricated and developed 3D Nichoid samples; tweezers and fingers for scale reference. (B). Scanning Electron Microscopy (SEM) images of 3D Nichoid samples with closeups on hierarchical elements: matrix of blocks of 5 × 5 niches (top left), block of 5 × 5 niches (top right), and single niches (bottom). (C). SEM images of the flat patterns of 2D Nichoid samples with closeups on hierarchical elements: a 5 × 5 block (top) and two single niches (bottom). Scale bars are shown in red color.