Packing the silica colloidal crystal beads: a facile route to superhydrophobic surfaces.
To mimic the structure of the lotus leaf, we present a facile route to prepare superhydrophobic surfaces by depositing nanoparticle clusters onto a solid surface. These clusters were fabricated via solidification of an emulsion droplet containing a nanoparticle in silicone oil. Thus, the microsized clusters and nanoparticles form dual-scale roughness structures. The surface is modified by fluoroalkylsilane and exhibits superhydrophobicity, with a contact angle greater than 165 degrees as well as a sliding angle less than 1 degrees . On the basis of size tuning of the nano/microstructures, various contact angles and sliding angles were investigated. Furthermore, the influence of micro/nanostructures on superhydrophobicity is discussed.
College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, PR China, 225002.
Cheng
C
Sun
Zhong-Ze
ZZ
Gu
Hua
H
Xu
D003102:Colloids; D008855:Microscopy, Electron, Scanning; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
D003102:Colloids; D012822:Silicon Dioxide