Facile Fabrication of a Hierarchical Superhydrophobic Coating with Aluminate Coupling Agent Modified Kaolin

Figure 3

SEM micrographs of the as-prepared superhydrophobic surface. The scale bars represent (a) 10 μm, (b) 5 μm, (c) 2 μm, and (d) 1 μm, respectively.

(a)

(b)

(c)

(d)