Figure 4.

Photographs of water droplet and contact angles of various buffered droplet. (a) Photographs of a water droplet before and after chemisorption of SA molecules on the surface of ZnO nanoflakes, (b) contact angles of various buffered droplet (black squaresdenote the average CA values).

Yao et al. Nanoscale Research Letters 2012 7:216   doi:10.1186/1556-276X-7-216
Download authors' original image