Fig. 3

Surface morphology of 2D OIHP films: SEM images of 2D OIHP films based on a PEA, b oF1PEA, c mF1PEA, and d pF1PEA. Scale bar is 10 µm
Surface morphology of 2D OIHP films: SEM images of 2D OIHP films based on a PEA, b oF1PEA, c mF1PEA, and d pF1PEA. Scale bar is 10 µm