Determination of the second step microstructure for superhydrophobic surfaces
Article first published online: 17 DEC 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Surface and Interface Analysis
Volume 45, Issue 5, pages 919–929, May 2013
How to Cite
Zhang, H., Li, W., Zhang, X., Miao, F., Li, T. and Liu, H. (2013), Determination of the second step microstructure for superhydrophobic surfaces. Surf. Interface Anal., 45: 919–929. doi: 10.1002/sia.5183
- Issue published online: 15 APR 2013
- Article first published online: 17 DEC 2012
- Manuscript Accepted: 25 OCT 2012
- Manuscript Revised: 10 OCT 2012
- Manuscript Received: 12 MAY 2012
- contact angle hysteresis;
A selection of suitable microstructures is critical to fabrication and properties of superhydrophobic surfaces (SHS). In this study, we introduce a three-dimensional droplet model to thermodynamically analyze the superhydrophobic properties for the purpose of determining the second step of a two-step microstructure suitable for the SHS based on the common models within the reach of the existing macro-machining technology. It is found that a sinusoidal microstructure is the most suitable, followed by a cone frustum and a prism in the composite wetting state, as well as the transition from hydrophilic to hydrophobic depends basically on the solid fraction rather than non-determinative surface microscopic topography. The predictions of the model are found in quite good agreement with the experimental observations. This study will facilitate fabrication of the SHS on how to select the suitable morphology. Copyright © 2012 John Wiley & Sons, Ltd.