Fabrication and characterization of a cotton candy like surface with superhydrophobicity

Superhydrophobic thin films were prepared on glass by air-brushing the in situ polymerization compositions of D5/SiO2. The wettability and morphology were investigated by contact angle measurement and scanning electron microscopy. The most superhydrophobic samples prepared had a static water contact angle of 157 deg. for a 5 μl droplet and a sliding angle of ∼1 deg. for 10 μl droplet. Thermal stability analysis showed that the surface maintained superhydrophobic at temperature up to 450 deg. C. Air trapping and capillary force on superhydrophobic behavior were evaluated.