Fractal patterning of nanoparticles on polymer films and their SERS capabilities

George Amarandei, Colm O'Dwyer, Arousian Arshak, David Corcoran

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate control, via electro-hydrodynamic (EHD) induced polymer instabilities and nanoparticle mobility, of hierarchical fractal arrangements of gold nanoparticles on patterned thin polymer films. The induced changes in the film curvature enhance fractal formation for high and not for low mobility nanoparticles. The high mobility nanoparticles cluster in circular fractal networks on the rims of a hexagonally ordered array of EHD-induced polymer peaks. These arrangements exhibit plasmonic properties for surface-enhanced Raman scattering (SERS) spectroscopy.

Original languageEnglish
Pages (from-to)8655-8662
Number of pages8
JournalACS Applied Materials and Interfaces
Volume5
Issue number17
DOIs
Publication statusPublished - 11 Sep 2013

Keywords

  • electro-hydrodynamic instabilities
  • nanoparticles
  • patterning
  • SERS
  • thin polymer films

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