title: Superhydrophobic bionic surfaces with hierarchical microsphere/SWCNT composite arrays.
abstract: 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.
authors.affiliation: Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea.
authors.forename: Yue
authors.initials: Y
authors.lastname: Li
authors.forename: Xing Jiu
authors.initials: XJ
authors.lastname: Huang
authors.forename: Sung Hwan
authors.initials: SH
authors.lastname: Heo
authors.forename: Cun Cheng
authors.initials: CC
authors.lastname: Li
authors.forename: Yang Kyu
authors.initials: YK
authors.lastname: Choi
authors.forename: Wei Ping
authors.initials: WP
authors.lastname: Cai
authors.forename: Sung Oh
authors.initials: SO
authors.lastname: Cho
mesh_terms: 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
chemical_list: D013501:Surface-Active Agents; D014867:Water