Unraveling the Salvinia paradox: design principles for submerged   superhydrophobicity
  The complex structure of the Salvinia molesta is investigated via rare event molecular dynamics simulations. Results show that a hydrophilic/hydrophobic patterning together with a re-entrant geometry control the free energy barriers for bubble nucleation and for the Cassie-Wenzel transition. This natural paradigm is translated into simple macroscopic design criteria for engineering robust superhydrophobicity in submerged applications. 
Matteo Amabili, Alberto Giacomello, Simone Meloni, and Carlo Massimo   Casciola
cond-mat.soft