Figure 4

AFM topographic image of a Lac-C surface (top) after removal of a portion of the film with the AFM tip. The height profile (bottom) shows a step edge with a height equivalent to the thickness of the phenyl-lactoside layer.

AFM topographic image of a Lac-C surface (top) after removal of a portion of the film with the AFM tip. The height profile (bottom) shows a step edge with a height equivalent to the thickness of the phenyl-lactoside layer.