How Wenzel and cassie were wrong.

@article{Gao2007HowWA,
  title={How Wenzel and cassie were wrong.},
  author={Lichao Gao and Thomas J. McCarthy},
  journal={Langmuir : the ACS journal of surfaces and colloids},
  year={2007},
  volume={23 7},
  pages={
          3762-5
        }
}
  • L. Gao, T. J. McCarthy
  • Published 22 February 2007
  • Physics
  • Langmuir : the ACS journal of surfaces and colloids
We argue using experimental data that contact lines and not contact areas are important in determining wettability. Three types of two-component surfaces were prepared that contain "spots" in a surrounding field: a hydrophilic spot in a hydrophobic field, a rough spot in a smooth field, and a smooth spot in a rough field. Water contact angles were measured within the spots and with the spot confined to within the contact line of the sessile drop. Spot diameter and contact line diameter were… 
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TLDR
This theoretical study was motivated by recent experiments and theoretical work that had suggested the dependence of the static contact angle on the local wetting at the triple-phase contact line and suggests that the wetting described by the Wenzel and Cassie equations is also the local soaking of the contact line rather than the global wetting of the droplet.
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TLDR
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