Fabrication of hierarchical ZnO architectures and their superhydrophobic surfaces with strong adhesive force.
Grid-structured ZnO microsphere arrays assembled by uniform ZnO nanorods were fabricated by noncatalytic chemical vapor deposition, taking advantage of morphologies of alumina nanowire pyramid substrates and ZnO oriented growth habits. Every ZnO microsphere (similar to the micropapilla on a lotus leaf surface) is assembled by over 200 various oriented ZnO nanorods (similar to the hairlike nanostructures on mircopapilla of a lotus leaf). This lotus-leaf-like ZnO micro-nanostructure films reveal superhydrophobicity and ultrastrong adhesive force to liquid. The realization of this hierarchical ZnO nanostructure film could be important for further understanding wettability of biological surfaces with micro-nanostructure and application in microfluidic devices.
Li
Yanbo
Y
Laboratory of Condensed Matter Spectroscopy and Opto-Electronic Physics, Department of Physics, and School of Chemistry & Chemical Technology, Shanghai Jiao Tong University, Shanghai, People's Republic of China.
Zheng
Maojun
M
Ma
Li
L
Zhong
Miao
M
Shen
Wenzhong
W