Fabrication of artificial Lotus leaves and significance of hierarchical structure for superhydrophobicity and low adhesion

The superhydrophobic and self-cleaning leaves of Lotus (Nelumbo nucifera, Gaertn.) have been used as a model for the development of artificial biomimetic surfaces. The hierarchical structure of the Lotus leaf has been recreated to characterize the influence of hierarchical roughness on superhydrophobicity and adhesion. Hierarchical structures were fabricated by a fast and precise molding of the Lotus leaf microstructure, and self-assembly of the natural Lotus wax deposited by thermal evaporation to create the wax tubules nanostructures. Tubule formation was initiated by exposure of the specimens to a solvent vapor phase at a selected temperature. In order to study the influence of structures at different scale…

• OS
  Ohio State University
• DF
  Deutsche Forschungsgemeinschaft
• RF
  Rheinische Friedrich-Wilhelms-Universität Bonn