Oil-in-water emulsion as fabrication platform for uniform plasmon-controlled two-dimensional metallic nanoparticle array

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Abstract

Gold/silver nanoparticles were trapped at the oil/water interface of oil droplets dispersed in water. The metallic nanoparticles were self-assembled into a uniform two-dimensional large array structure through the aggregation and coalescence of the nanoparticle-covered oil droplets. The plasmon resonance of the array structure was tunable and a surface-enhanced Raman scattering measurement was performed with the silver nanoparticle array. The enhancement factor was >105 and enhanced Raman signals were observed over the whole array (cm2) with high reproducibility, which is an advantage of a self-assembly method using a liquid/liquid interface.

Original languageEnglish
Article number075003
JournalApplied Physics Express
Volume9
Issue number7
DOIs
Publication statusPublished - Jul 1 2016

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ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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