Figure 5.

AFM height images of C20A film structures spin coated from ethanol (a), iso-propanol (b), and sec-butanol (c) with ~10 vol% m-cresol. The z range is 3 nm for (a) and (b) and 5 nm for (c).

Wan et al. Nanoscale Res Lett 2011 6:49   doi:10.1007/s11671-010-9793-9