Abstract
This short review summarizes a preparation method for superhydrophobic surface by spray-coating technique. Superhydrophobic coatings can be prepared on a variety of substrate such as paper, metal, and cotton by spraying nanoparticle suspensions. As nanoparticles, hydrophobic silica nanoparticles, nano-pigments, and carbon nanotubes are applicable. In order to provide superhydrophobicity for the nanoparticle coatings, several factors (i.e., size of nanoparticles, surface energy of nanoparticles, types of solvent, and the amount of the coatings) played crucial roles. The spray-coating technique is a simple, safe and low-cost method to form superhydrophobic surface.
