On the Modeling of Hydrophobic Contact Angles on Rough Surfaces

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Wetting and Roughness (2008, background): “However, Cassie states are often observed in spite of a higher interfacial energy (64, 66, 67).”
Robust omniphobic surfaces (2008, methodology): “The question that arises is, “Which of these states is naturally realized by any given surface and how can one design textures that promote the formation of a composite interface for a given liquid?” The answer is determined by considering the overall free energy of the system comprising the liquid ”