Fluorescence enhancement from nominally flat surfaces

ORAL

Abstract

We report on experimental investigations of fluorescence enhancement from nominally flat silver and silicon substrates, in the presence of an oxide spacer layer. By varying the thickness of the oxide layer to change the spacing between fluorophores and the substrate, we find that the relative fluorescent intensity measured above Ag vs. Si substrates oscillates, indicating a resonant effect. We investigate the effect of nanoscale roughness on the observed fluorescent enhancement.

*Work supported by the Laboratory for Physical Sciences and in part by a NSF-MRSEC, DMR \# 0520471.

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Authors

  • Shy-Hauh Guo

    • University of Maryland, Electric Engineering, College Park, MD and Laboratory for Physical Sciences, College Park, MD
    • Department of Electrical and Computer Engineering, University Of Maryland, College Park, MD, 20742

  • Hung-Chih Kan

    • Department of Physics, University Of Maryland, College Park, MD, 20742

  • Ray Phaneuf

    • University of Maryland, Materials Science, Physics, and Electric Engineering, College Park, MD,and Lab for Physical Sciences, College Park, MD
    • Department of Materials Science and Engineering, University Of Maryland, College Park, MD, 20742
    • University of Maryland