Self-assembly of metal nanostructures on binary alloy surfaces

TitleSelf-assembly of metal nanostructures on binary alloy surfaces
Publication TypeJournal Article
Year of Publication2011
AuthorsDuguet T, Han Y, Yuen C, Jing DP, Unal B, Evans JW, Thiel PA
Journal TitleProceedings of the National Academy of Sciences of the United States of America
Volume108
Pages989-994
Date Published01/18
ISBN Number0027-8424
Accession NumberISI:000286310300022
Keywordsau, deposition, dft, epitaxial growth, films, growth, ISLANDS, kmc, nanoparticles, stm
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.

URL<Go to ISI>://000286310300022http://www.pnas.org/content/108/3/989.full.pdf
DOI10.1073/Pnas.1008157107
Alternate JournalP Natl Acad Sci USA