Superhydrophobic bionic surfaces with hierarchical microsphere/SWCNT composite arrays.
Superhydrophobic bionic surfaces with hierarchical micro/nano structures were synthesized by decorating single-walled or multiwalled carbon nanotubes (CNTs) on monolayer polystyrene colloidal crystals using a wet chemical self-assembly technique and subsequent surface treatment with a low surface-energy material of fluoroalkylsilane. The bionic surfaces are based on the regularly ordered colloidal crystals, and thus the surfaces have a uniform superhydrophobic property on the whole surface. Moreover, the wettability of the bionic surface can be well controlled by changing the distribution density of CNTs or the size of polystyrene microspheres. The morphologies of the synthesized bionic surfaces bear much resemblance to natural lotus leaves, and the wettability exhibited remarkable superhydrophobicity with a water contact angle of about 165 degrees and a sliding angle of 5 degrees.
Li
Yue
Y
Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea.
Huang
Xing Jiu
XJ
Heo
Sung Hwan
SH
Li
Cun Cheng
CC
Choi
Yang Kyu
YK
Cai
Wei Ping
WP
Cho
Sung Oh
SO
D001701:Bionics; D057927:Hydrophobic and Hydrophilic Interactions; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry*; D014867:Water
D013501:Surface-Active Agents; D014867:Water