Journal of Fluorescence

, 15:777 | Cite as

Enhanced Fluorescence from Periodic Arrays of Silver Nanoparticles

  • T. D. Corrigan
  • S. Guo
  • R. J. Phaneuf
  • H. Szmacinski
Article

Abstract

Electron beam lithography was used to fabricate silver nanoparticle arrays and study the effects of geometrical properties of particles on metal-enhanced fluorescence. Nanoparticle size, shape, interparticle spacing, and nominal thickness were varied in a combinatorial pattern for investigation of the particle plasmon resonance effect on enhancement of fluorescence from three different fluorophores; Fluorescein, Cy3, and Cy5. A specific geometric property for optimal enhancement from each fluorophore was determined. For interparticle spacings greater or equal to 270 nm, the enhancement matched what is expected for a single-particle model. For those particles smaller than 210 nm, the enhancement was lower than for the larger spacing in the range studied. Triangular-shaped particles gave similar enhancement to those of square-shaped particles. This combinatorial pattern by e-beam lithography was found to be useful for studying how individual parameters enhance the fluorescence that are important for rational design of enhanced fluorescence sensors.

Keywords

Fluorescence particle plasmon resonance electron-beam lithography metallic nanoparticles Cy3 Cy5 

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Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • T. D. Corrigan
    • 1
  • S. Guo
    • 1
  • R. J. Phaneuf
    • 1
  • H. Szmacinski
    • 2
  1. 1.Department of Materials Science and EngineeringUniversity of Maryland and Laboratory for Physical Sciences
  2. 2.Microcosm Inc.Columbia

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