Figure 5 | Scientific Reports

Figure 5

From: A combined 3D printing/CNC micro-milling method to fabricate a large-scale microfluidic device with the small size 3D architectures: an application for tumor spheroid production

Figure 5

Scanning electron micrographs of the microwell molds. (a) Top view of a single 400 µm microwell mold. (b, c) Top and side views of microwells with a height of 400 µm. (d, e) Side view of a 300 µm microwell before and after PMMA coating. (f) An example of the failure in the PMMA layer causes by bubble formation.

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