Figure 3From: Micro-nano hybrid structures with manipulated wettability using a two-step silicon etching on a large area MNHS with micropillars fabricated with acetone-based PR stripping: (a, b) top-view images; (c, d) tilted-view images. The width of a square micropillar and the gap between pillars are 100 and 20 μm, respectively.Back to article page