title: Controlling the structure and size of Au nanocrystals by annealing and ion sputtering.
abstract: In situ thermal annealing was used for the first time to observe directly that Au nanoparticles, which were originally fully embedded in the near-surface region of TiO(2), can be tailored into hemispheres exposed at the surface at elevated temperature. Precise control of the size of the Au hemispheres was achieved by subsequent low-energy ion sputtering. This method can be used to control the structure and size of a wide variety of nanoparticles in a matrix where surface structure and particle size are required to obtain specific material properties.
authors.affiliation: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.
authors.forename: Weixing
authors.initials: W
authors.lastname: Li
authors.forename: Yanbin
authors.initials: Y
authors.lastname: Chen
authors.forename: Jiaming
authors.initials: J
authors.lastname: Zhang
authors.forename: Lumin
authors.initials: L
authors.lastname: Wang
authors.forename: Rodney C
authors.initials: RC
authors.lastname: Ewing
mesh_terms: D006046:Gold / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D015394:Molecular Structure; D053758:Nanoparticles; D010316:Particle Size; D015203:Reproducibility of Results; D013499:Surface Properties
chemical_list: D006046:Gold