AFM images of GQDs on mica substrates were obtained by tapping mode at room temperature using a Molecular Imaging PicoScan scanning probe microscope equipped with a nanosensors tips/cantilever,
AFM images of GQDs on mica substrates were obtained bytapping mode at room temperature using a Molecular ImagingPicoScan scanning probe microscope equipped with a nanosensors tips/cantilever,