Figure 2.

AFM height images of carboxylic acid spin coated from m-cresol (a) C20A. b Selected area in (a). The periodicity was determined by the corresponding 2-D FFT images. The z range is 5 nm for both images.

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