title: Fabrication gradient surfaces by changing polystyrene microsphere topography.
abstract: A rather simple yet effective way to fabricate gradient surfaces by changing polystyrene (PS) microsphere topography in a temperature gradient field is proposed. The wettability of the film has an obvious gradient change from 88.7 to 148.1 degrees . The changes of the PS microsphere topography are believed to be responsible for the changing of the wettability.
authors.affiliation: State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, The Chinese Academy of Sciences, Changchun 130022, People's Republic of China.
authors.forename: Jilin
authors.initials: J
authors.lastname: Zhang
authors.forename: Longjian
authors.initials: L
authors.lastname: Xue
authors.forename: Yanchun
authors.initials: Y
authors.lastname: Han