title: Symmetric and asymmetric Ostwald ripening in the fabrication of homogeneous core-shell semiconductors.
abstract: Two methodic concepts, symmetric and asymmetric Ostwald ripening, are elucidated by solution-route syntheses of oxide and sulfide semiconductors. While the original shape of a crystallite aggregate forms the exterior appearance, the preorganization of the crystallites determines the ultimate interior space structure of the aggregate upon Ostwald ripening. Further investigations on the design of crystallite preorganization and control of the solution process will allow the construction of complex architectures, including nonspherical configurations.
authors.affiliation: Department of Chemical and Biomolecular Engineering, Faculty of Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore.
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.forename: Hua Chun
authors.initials: HC
authors.lastname: Zeng
mesh_terms: D003102:Colloids / Q000737:chemistry; D003460:Crystallization; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods*; D010084:Oxidation-Reduction; D012666:Semiconductors; D013440:Sulfides / Q000737:chemistry; D014961:X-Ray Diffraction; D019287:Zinc Sulfate / Q000737:chemistry
chemical_list: D003102:Colloids; D013440:Sulfides; D019287:Zinc Sulfate