Fig. 4.

AFM images of hydrophobic surfaces prepared by different techniques imaged in various aqueous solutions. Shown are hydrophobic surfaces under water prepared by LB deposition of DODA on mica (a) and self-assembly of cetyltrimethylammonium bromide on mica (b). [b reproduced with permission from ref. 95 (Copyright 2005, American Chemical Society).] (c) Nanobubbles on a hydrophobic glass substrate. [Reproduced with permission from ref. 71 (Copyright 2002, American Chemical Society).]