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Proceedings Paper

Experimental characterization of dispersion in plasmonic nanostripes for integrated DNA sensing
Author(s): Paul Steinvurzel; Tian Yang; Kenneth B. Crozier
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Paper Abstract

Nanoscale metal stripes support plasmonic modes with strongly confined fields. When combined with a waveguide-coupled microfluidic system, these stripes can provide highly sub-wavelength excitation regions for single biomolecule sensing, e.g. dark-field fluorescence detection of tagged DNA. Using a prism coupled geometry, we experimentally characterize the dispersion of plasmon modes in 80-500 nm wide metal stripes. Our results agree well with numerical modeling. We investigate how the stripe morphology affects the mode distribution and dispersion, and consider the implications for integrated near field fluorescence excitation.

Paper Details

Date Published: 11 February 2010
PDF: 11 pages
Proc. SPIE 7604, Integrated Optics: Devices, Materials, and Technologies XIV, 760417 (11 February 2010); doi: 10.1117/12.842797
Show Author Affiliations
Paul Steinvurzel, Harvard Univ. (United States)
Tian Yang, Harvard Univ. (United States)
Univ. of Michigan - Shanghai Jiao Tong Univ. Joint Institute (China)
Kenneth B. Crozier, Harvard Univ. (United States)

Published in SPIE Proceedings Vol. 7604:
Integrated Optics: Devices, Materials, and Technologies XIV
Jean-Emmanuel Broquin; Christoph M. Greiner, Editor(s)

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