The Cassie-Wenzel transition of fluids on nanostructured substrates: Macroscopic force balance versus microscopic density-functional theory.

@article{Tretyakov2016TheCT,
  title={The Cassie-Wenzel transition of fluids on nanostructured substrates: Macroscopic force balance versus microscopic density-functional theory.},
  author={N. Tretyakov and P. Papadopoulos and D. Vollmer and H. Butt and B. Duenweg and K. Daoulas},
  journal={The Journal of chemical physics},
  year={2016},
  volume={145 13},
  pages={
          134703
        }
}
Classical density functional theory is applied to investigate the validity of a phenomenological force-balance description of the stability of the Cassie state of liquids on substrates with nanoscale corrugation. A bulk free-energy functional of third order in local density is combined with a square-gradient term, describing the liquid-vapor interface. The bulk free energy is parameterized to reproduce the liquid density and the compressibility of water. The square-gradient term is adjusted to… Expand
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