... monolayer of reduced GOFigure 2 Tapping mode AFM image of GO on SiO2/Si with step height profile.Figure 3 AFM image of polyquaternium-stabilized graphene membrane with height profiles.ul ... Physics12:2164-2169.13. Hummers WS, Offeman RE: Preparation of graphitic oxide. Journal of theAmerican Chemical Society 1958, 80:1339-1339.14. Zhou X, Wu T, Ding K, Hu B, Hou M, Han B: Dispersion of graphene sheetsin ... of GO soon leads to agglomera-tion, while a stable dispersion is key to the possibility of large-scale processing. Polymeric imidazolium salts can bea good way to form a stable dispersion of...