Figure 2 | Scientific Reports

Figure 2

From: Enhanced Cell Adhesion on a Nano-Embossed, Sticky Surface Prepared by the Printing of a DOPA-Bolaamphiphile Assembly Ink

Figure 2

Surface modification using the bolaamphiphile assemblies. (a) Molecular structure of bis(N-alpha-amido-3,4-dihydroxyphenylalanine)−1,7-heptane dicarboxylate (DOPA-C7), (b) SEM image of the modified surface of silicon wafer (left smooth surface: bare silicone, right embossed surface: modified with DOPA-C7 assemblies), (c) topological image of the modified surface showing densely deposited assemblies, (d) photo images of the contact angle before/after surface modification of PTFE film. The hydrophobic PTFE surface (109.1°) became hydrophilic (49.6°) after the modification.

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