These nanostrutures are on Ti substrate. Is it possible to calculate the surface area of these kind of surfaces from AFM?By using the roughness and contact angle measurement?
I do not see a simple and precise way of doing it: titania is non-porous with a surface area less than 8 m2/g, theoretically pure graphene should have 2630 m2/g.
You need to know by AFM how much of the graphene is overlapped on itself (or titania) and multiply this factor (