title: Facile synthesis of three-dimensional ZnO nanostructure: realization of a multifunctional stable superhydrophobic surface.
abstract: BACKGROUND
  After comprehensive study of various superhydrophobic phenomena in nature, it is no longer a puzzle for researchers to realize such fetching surfaces. However, the different types of artificial surfaces may get wetted and lose its water repellence if there exist defects or the liquid is under pressure. With respect to the industry applications, in which the resistance of wetting transition is critical important, new nanostructure satisfied a certain geometric criterion should be designed to hold a stable gas film at the base area to avoid the wet transition.
  
  
  METHODS
  A thermal deposition method was utilized to produce a thin ZnO seeds membrane on the aluminum foil. And then a chemical self-assemble technology was developed in present work to fabricate three-dimensional (3D) hierarchical dune-like ZnO architecture based on the prepared seeds membrane.
  
  
  RESULTS
  Hierarchical ZnO with micro scale dune-like structure and core-sharing nanosheets was generated. The characterization results showed that there exist plenty of gaps and interfaces among the micro-dune and nanosheets, and thus the surface area was enlarged by such a unique morphology. Benefited from this unique 3D ZnO hierarchical nanostructure, the obtained surface exhibited stable water repellency after modification with Teflon, and furthermore, based on solid theory analysis, such 3D ZnO nanostructure would exhibit excellent sensing performance.
authors.affiliation: School of Electronic Science and Engineering, Southeast University, Nanjing, People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Wu
authors.forename: Jun
authors.initials: J
authors.lastname: Xia
authors.forename: Wei
authors.initials: W
authors.lastname: Lei
authors.forename: Baoping
authors.initials: B
authors.lastname: Wang
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D057927:Hydrophobic and Hydrophilic Interactions; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D013052:Spectrometry, X-Ray Emission; D013499:Surface Properties; D015034:Zinc Oxide / Q000138:chemical synthesis*
chemical_list: D000537:Aluminum Oxide; D015034:Zinc Oxide