Preparation of superhydrophobic surfaces of hierarchical structure of hybrid from nanoparticles and regular pillar-like pattern.
The hierarchical structure silica surface of inlaying silica nanoparticles along a regular pillar-like pattern is fabricated by embossing silica sol-gel precursor mixed with silica nanoparticles on glass substrates with an elastomeric mold. The substrate is further modified by a self-assembled fluorosilanated monolayer to reduce its surface energy. The advancing/receding contact angle measurements are performed to demonstrate that a water droplet on these surfaces can exhibit a transition from the Wenzel state to the Cassie state due to the addition of silica nanoparticles to enhance its surface roughness.
Yeh
Kuan-Yu
KY
Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
Cho
Kuan-Hung
KH
Chen
Li-Jen
LJ
D005898:Glass; D057927:Hydrophobic and Hydrophilic Interactions; D053758:Nanoparticles / Q000737:chemistry*; D044367:Phase Transition; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D014867:Water / Q000737:chemistry
D014867:Water; D012822:Silicon Dioxide