title: Preparation of metallodielectric composite particles with multishell structure.
abstract: In this article, we demonstrated the synthesis of metallodielectric composite particles comprising a metal shell on a dielectric core and an outer coating of an insulating dielectric layer by depositing silver on silica supporting cores followed by coating of titania. A combination of surface reaction and surface seeding techniques is exploited for the formation of a complete silver shell on silica spheres. The additional outer coating of titania on silver shell particles is then performed by hydrolyzing tetra-n-butyl titanate in ethanol at room temperature. The morphologies of silver shells and titania coating are studied with electron microscopy, and their existences are confirmed with X-ray diffraction and energy-dispersive X-ray measurement.
authors.affiliation: National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Chen
authors.forename: Z L
authors.initials: ZL
authors.lastname: Wang
authors.forename: P
authors.initials: P
authors.lastname: Zhan
authors.forename: J H
authors.initials: JH
authors.lastname: Zhang
authors.forename: W Y
authors.initials: WY
authors.lastname: Zhang
authors.forename: H T
authors.initials: HT
authors.lastname: Wang
authors.forename: N B
authors.initials: NB
authors.lastname: Ming