Plasmonics

, Volume 5, Issue 2, pp 169–174

Nanoaperture Fluorescence Enhancement in the Ultraviolet

Article

DOI: 10.1007/s11468-010-9126-y

Cite this article as:
Mahdavi, F. & Blair, S. Plasmonics (2010) 5: 169. doi:10.1007/s11468-010-9126-y

Abstract

We study fluorescence excitation and emission enhancement in the ultraviolet regime for molecules confined within sub-wavelength metal apertures. Calculations are performed across a range of excitation wavelengths for individual apertures constructed in gold, silver, and aluminum. As expected, enhancement in the ultraviolet is greatest with aluminum. Using excitation and emission wavelengths appropriate for tryptophan, we find that more than 10× net increase in fluorescence count rate should be obtainable for aluminum apertures of ~75 nm diameter. These results suggest that many applications utilizing native protein fluorescence could become practical, even to the single molecule level.

Keywords

Fluorescence Surface plasmons Nanoapertures  Tryptophan 

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Department of Electrical and Computer EngineeringUniversity of UtahSalt Lake CityUSA