First observation of surface plasmon-coupled emission due to LED excitation

Derek S. Smith, Yordan Kostov, Govind Rao, Ignacy Gryczynski, Joanna Malicka, Zygmunt Gryczynski, Joseph R. Lakowicz

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Detection limitations for fluorescence methods are normally determined by the phenomenon itself rather than the sensitivity of the instrumentation. These limitations make it necessary to have high sensitivity, high cost equipment causing fluorescence methods to remain lab-oriented. Alleviation of the limitations can be achieved through the phenomenon of surface plasmon-coupled emission (SPCE), which displays enhanced, directional, polarized fluorescence. Here we present the excitation of SPCE from Rhodamine B with a light-emitting diode (LED). Incorporating the gains in sensitivity due to SPCE with LED excitation, it could be possible to design low-cost, high-sensitivity sensors that would allow measurements to be performed in the field.

Original languageEnglish
Pages (from-to)895-900
Number of pages6
JournalJournal of Fluorescence
Issue number6
StatePublished - Nov 2005


  • Directional emission
  • Fluorescence
  • LED excitation
  • Surface plasmons
  • Thin metal films


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