Controlled switching of the wetting behavior of biomimetic surfaces with hydrogel-supported nanostructures
Original entry by Sagar Bhandari, APPHY 225 Fall 2010
Controlled switching of the wetting behavior of biomimetic surfaces with hydrogel-supported nanostructures,Alexander Sidorenko, Tom Krupenkinb and Joanna Aizenberg, J. Mater. Chem., 2008, 18, 3841-3846
nanostructure, microstructure, wetting, biomimetic
In this paper, the authors demonstrate the application of a variation of biomimetic surfaces capable of dynamic actuation in controlled reversible switching of the surface wetting behavior. The authors described a method of fabricating Si nanostructured surfaces with high-aspect-ratio features as shown in Figure 1a. When a hydrophobic coating is applied, the nanostructured surfaces demonstrate remarkable superhydrophobicity. As shown in Figure 1b, the water droplet remains in almost spherical shape when it's on the superhydrophobic surface.