Visualization of the Penetration Depth of Plasma in Three-Dimensional Porous PCL Scaffolds

A dielectric barrier discharge (DBD) discharge is used to modify the surface properties of 3-D porous polycaprolactone (PCL) scaffolds. After plasma treatment, the penetration of blue ink into the samples was used to determine the effectiveness of the plasma treatment inside the structures. It was found that the ink could penetrate deeper into the scaffolds after plasma treatment.