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AFM images of films with different chitosan/PAH compositions—100/0 (CTH-0), 80/10 (CTH-2), 60/40 (CTH-4), and 40/60 (CTH-5)—and their corresponding 3D images in panels on mica using tapping mode. The scale size was 10 × 10 μm and the z scale was 20 nm and 30 nm, respectively.
