Inscribing wettability gradients onto polymer substrates with different stiffness using corona discharge in point-to-plane geometry

- DC corona discharge leads to the formation of a wettability gradient on polymers.
- Using condensation different radial zones with different wettability were determined.
- The formation of a wettability gradient depends on the polymer stiffness.
- Coulomb interactions seem to influence the spatial distribution of wettability.