Model for Contact Angles and Hysteresis on Rough and Ultraphobic Surfaces

By C. Extrand. 2002

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Superhydrophobic and superhydrophilic plant surfaces: an inspiration for biomimetic materials (2009, unknown): “This tilt angle (TA) is simply defined as the tilting angle of a surface on which an applied drop of water starts to move (Extrand 2002).”
Contact angle, adhesion and friction properties of micro-and nanopatterned polymers for superhydrophobicity (2006, background): “Low contact angle hysteresis results in a very low water roll-off angle, which denotes the angle to which a surface may be tilted for roll-off of water drops (i.e., very low water contact angle hysteresis) (Extrand 2002, Kijlstra et al 2002).”
Mimicking natural superhydrophobic surfaces and grasping the wetting process: a review on recent progress in preparing superhydrophobic surfaces. (2011, background): “On the other hand, the highest static contact angle of 173° and lowest CAH of 1° were found on hierarchical structurewith lotus wax.”