Directed liquid phase assembly of highly ordered metallic nanoparticle arrays

Yueying Wu, Nanyi Dong, Shaofang Fu, Jason D. Fowlkes, Lou Kondic, Maria A. Vincenti, Domenico De Ceglia, Philip D. Rack

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Directed assembly of nanomaterials is a promising route for the synthesis of nanoscale materials. In this paper, we demonstrate the directed-assembly of highly ordered two-dimensional arrays of hierarchical nanostructures with tunable size, spacing and composition. The directed assembly is achieved on lithographically patterned metal films that are subsequently pulse-laser melted; during the brief liquid lifetime, the pattened nanostructures assemble into highly ordered primary and secondary nanoparticles, with sizes below that which was originally patterned. Complementary fluid-dynamics simulations emulate the resultant patterns and show how the competition of capillary forces and liquid metal-solid substrate interaction potential drives the directed assembly. As an example of the enhanced functionality, a full-wave electromagnetic analysis has been performed to identify the nature of the supported plasmonic resonances.

Original languageEnglish (US)
Pages (from-to)5835-5843
Number of pages9
JournalACS Applied Materials and Interfaces
Volume6
Issue number8
DOIs
StatePublished - Apr 23 2014

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Keywords

  • dewetting
  • directed assembly
  • laser
  • nanoparticle array
  • plasmonics

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