Size-selected monodisperse nanoclusters on supported graphene: Bonding, isomerism, and mobility

Bo Wang, Bokwon Yoon, Michael König, Yves Fukamori, Friedrich Esch, Ueli Heiz, Uzi Landman

Research output: Contribution to journalArticlepeer-review

74 Scopus citations

Abstract

Soft-landing of size-selected Pdn (n ≤ 20) nanoclusters on a Moiré-patterned surface of graphene adsorbed on Ru(0001) leads to controlled formation of a truly monodisperse cluster-assembled material. Combined scanning tunneling microscopy and first-principles calculations allow identification of selective adsorption sites, characterization of size-dependent cluster isomers, and exploration of interconversion processes between isomeric forms that manifestly influence cluster surface mobility. Surface-assembled cluster superstructures may be employed in nanocatalytic applications, as well as in fundamental investigations of physical factors controlling bonding, structure, isomerism, and surface mobilities of surface-supported clusters.

Original languageEnglish
Pages (from-to)5907-5912
Number of pages6
JournalNano Letters
Volume12
Issue number11
DOIs
StatePublished - 14 Nov 2012
Externally publishedYes

Keywords

  • STM
  • Size-selected supported Pd clusters
  • epitaxial graphene Moire?substrate
  • first-principles DFT calculations
  • isomerism-guided diffusion
  • selective adsorption

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