Research Article

Effects of a Nonthermal Atmospheric Pressure Plasma Jet on Human Gingival Fibroblasts for Biomedical Application

Figure 2

(a), (c) 3D and (b), (d) 2D surface roughness images of an (a), (b) air or (c), (d) air APPJ treated polystyrene plate, and (e) a comparison graph of the Ra value ().