Transparent, Superhydrophobic Surfaces from One-Step Spin Coating

Jan 31, 2012 - The influence of the hydrophobic agent, catalyst, solvent and water content on the wetting properties of the silica films prepared by o...
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Transparent, Superhydrophobic Surfaces from One-step Spin Coating of Hydrophobic Nanoparticles Lebo Xu, † Raghuraman G. Karunakaran,† Jia Guo, and Shu Yang* Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, Pennsylvania 19104 †:

These authors contributed equally to this work.

Correspondence should be addressed to: [email protected]

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Table S1. DI water contact angles of 0.8 wt% F-SiO2 NPs spin coated on glass before and after the water drop test and the Scotch tape test.

Sample Original After DI droplet test After Scotch tape test

θst 149.7 ± 1 143.9 ± 1 74.2 ± 2

θadv 160.4 ± 2 148.3 ± 1 75.5 ± 2

θrec N/A 136.8 ± 2 47.2 ± 2

Δθ = θadv - θrec (º) N/A 11.5 ± 2 28.3 ± 2

Figure S1. AFM images of 0.8 wt% F-SiO2 NPs coated on glass before (a) and after the water drop test (b) and the Scotch tape test (c). All images are of 5 µm × 5 µm scale with the height scale bar of 200 nm.

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