Biomimetics pp 189-206 | Cite as

Characterization of Rose Petals and Fabrication and Characterization of Superhydrophobic Surfaces with High and Low Adhesion

Chapter
Part of the Biological and Medical Physics, Biomedical Engineering book series (BIOMEDICAL)

Abstract

Unlike the Lotus leaf, some rose petals (rosea Rehd), scallions, and garlic exhibit superhydrophobicity with high contact angle hysteresis (Feng et al., 2008; Chang et al., 2009; Bhushan and Her, 2010). While a water droplet can easily roll off the surface of a Lotus leaf, it stays pinned to the surface of these leaves. The different behavior of wetting between the Lotus leaf and the rose petal can be explained by different designs in the surface hierarchical micro- and nanostructure. Since the rose petal’s microstructure, possibly nanostructure, has a larger pitch value and lower height than the Lotus leaf, the liquid is allowed to impregnate between the microstructure and partially penetrates into the nanostructure, which increases the wetted surface area. As a result, contact angle hysteresis increases with increasing wetted surface area.

Keywords

Contact Angle Superhydrophobic Surface Static Contact Angle Contact Angle Hysteresis Lotus Leaf 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Nanoprobe Laboratory for Bio- and Nanotechnology and BiomimeticsOhio State UniversityColumbusUSA

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