Three-dimensional interfacial structure determination of hollow gold nanosphere aggregates

Scott M. Stagg, Kenneth L. Knappenberger, Anne Marie Dowgiallo, Manabendra Chandra

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

The boundary regions between hollow gold nanospheres (HGNs) comprising an extended aggregate were examined using 3-D electron tomography. The images obtained from these experiments allowed for precise determination of the 3-D arrangement of the HGNs within the aggregate and revealed structural heterogeneities that were not resolvable with traditional two-dimensional techniques. These features included particle necking, point contacts, lattice pinholes, and HGN cavities that were joined by pores. The theoretical influence of these interfacial substructures on nanoscale plasmon properties was assessed using finite difference time domain (FDTD) numerical simulations. These results demonstrated the prospective impact of 3-D imaging techniques on the development of complete-structure descriptions of nanoscale optical properties.

Original languageEnglish (US)
Pages (from-to)2946-2950
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume2
Issue number23
DOIs
StatePublished - Dec 1 2011

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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