Martines, E., Seunarine, K., Morgan, H., Gadegaard, N., Wilkinson, C. and Riehle, M.O. (2005) Superhydrophobicity and superhydrophilicity of regular nanopatterns. Nano Letters, 5, pp. 2097-2103. (doi: 10.1021/n1051435t)
Full text not currently available from Enlighten.
Abstract
The hydrophilicity, hydrophobicity, and sliding behavior of water droplets on nanoasperities of controlled dimensions were investigated experimentally. We show that the “hemi-wicking” theory for hydrophilic SiO<sub>2</sub> samples successfully predicts the experimental advancing angles and that the same patterns, after silanization, become superhydrophobic in agreement with the Cassie−Baxter and Wenzel theories. Our model topographies have the same dimensional scale of some naturally occurring structures that exhibit similar wetting properties. Our results confirm that a forest of hydrophilic/hydrophobic slender pillars is the most effective superwettable/water-repellent configuration. It is shown that the shape and curvature of the edges of the asperities play an important role in determining the advancing angles.
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Riehle, Dr Mathis |
Authors: | Martines, E., Seunarine, K., Morgan, H., Gadegaard, N., Wilkinson, C., and Riehle, M.O. |
College/School: | College of Medical Veterinary and Life Sciences > School of Molecular Biosciences |
Journal Name: | Nano Letters |
Publisher: | American Chemical Society |
ISSN: | 1530-6984 |
ISSN (Online): | 1530-6992 |
University Staff: Request a correction | Enlighten Editors: Update this record