title: Self-assembly of metal nanostructures on binary alloy surfaces.
abstract: Deposition of metals on binary alloy surfaces offers new possibilities for guiding the formation of functional metal nanostructures. This idea is explored with scanning tunneling microscopy studies and atomistic-level analysis and modeling of nonequilibrium island formation. For Au/NiAl(110), complex monolayer structures are found and compared with the simple fcc(110) bilayer structure recently observed for Ag/NiAl(110). We also consider a more complex codeposition system, (Ni + Al)/NiAl(110), which offers the opportunity for fundamental studies of self-growth of alloys including deviations for equilibrium ordering. A general multisite lattice-gas model framework enables analysis of structure selection and morphological evolution in these systems.
authors.affiliation: Departments of Chemistry, Iowa State University, Ames, IA 50011, USA.
authors.forename: T
authors.initials: T
authors.lastname: Duguet
authors.forename: Yong
authors.initials: Y
authors.lastname: Han
authors.forename: Chad
authors.initials: C
authors.lastname: Yuen
authors.forename: Dapeng
authors.initials: D
authors.lastname: Jing
authors.forename: Barış
authors.initials: B
authors.lastname: Unal
authors.forename: J W
authors.initials: JW
authors.lastname: Evans
authors.forename: P A
authors.initials: PA
authors.lastname: Thiel
mesh_terms: D000327:Adsorption; D000497:Alloys / Q000737:chemistry*; D000535:Aluminum / Q000737:chemistry*; D002627:Chemistry, Physical / Q000379:methods*; D006046:Gold / Q000737:chemistry*; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D000497:Alloys; D012834:Silver; D006046:Gold; D009532:Nickel; D000535:Aluminum