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. 2019 Jul 12;7:483. doi: 10.3389/fchem.2019.00483

Figure 3.

Figure 3

(a) Photo of the completed device with PDMS cover on top of the silicon chip. (b) SEM images of three separate microchannels each containing an array of micropillars with different pillar arrangements. (c) SEM image of a triangular-shaped micropillars with lateral and top silicon spikes.