title: Fabrication of wafer-size monolayer close-packed colloidal crystals via slope self-assembly and thermal treatment.
abstract: We developed a simple and general approach for constructing a wafer-scale monolayer, close-packed polystyrene (PS), and SiO2 sphere arrays, namely colloidal crystals, which have significant potential in various applications. The method combines slope self-assembly and thermal treatment to achieve large-area and high-quality colloidal crystal with a proper slant angle (θ) and latex concentration (volume fraction, φ). The dependence of the structures of colloidal crystals on a dispersion system was also investigated. Moreover, a theoretical analysis of the slope self-assembly method was proposed. In addition, we applied the method to assemble PS spheres on different kinds of substrates, which indicates that the method is a versatile and reliable way to fabricate monolayer colloidal crystals.
authors.affiliation: Department of Physics, University of Science and Technology of China , Hefei, Anhui 230026, China.
authors.forename: Yizhi
authors.initials: Y
authors.lastname: Wu
authors.forename: Cheng
authors.initials: C
authors.lastname: Zhang
authors.forename: Ye
authors.initials: Y
authors.lastname: Yuan
authors.forename: Ziwen
authors.initials: Z
authors.lastname: Wang
authors.forename: Weijia
authors.initials: W
authors.lastname: Shao
authors.forename: Huijie
authors.initials: H
authors.lastname: Wang
authors.forename: Xiaoliang
authors.initials: X
authors.lastname: Xu
mesh_terms: D003102:Colloids; D011137:Polystyrenes / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D013696:Temperature; D014867:Water / Q000737:chemistry*
chemical_list: D003102:Colloids; D011137:Polystyrenes; D014867:Water; D012822:Silicon Dioxide