Fig. 4From: Regulated Surface Morphology of Polyaniline/Polylactic Acid Composite Nanofibers via Various Inorganic Acids Doping for Enhancing Biocompatibility in Tissue EngineeringAFM image and surface roughness (Ra) of a PLA nanofibers, b PANI/PLA-HA, c PANI/PLA-SA, and d PANI/PLA-PA composite nanofibersBack to article page