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Proceedings Paper

Photonic nanostructures as SERS substrates for reproducible characterization of bacterial spores
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Paper Abstract

Surface enhanced Raman spectroscopy (SERS) has been used as a tool to investigate spectral differences of bacterial endospores. Ultimately, this method could be used as a smart and rapid on-site detector for biological warfare agents. However, due to the spectral complexity and the relative size of spores to the substrate features, a rigidly defined substrate is necessary for reproducible characterization. We are investigating many of the reported substrate classes such as: Nano-sphere lithography (NSL), Film over nano-sphere (FONS), nano-shells, electrochemically roughened metals, and dispersed and immobilized colloids. The key aspects of this work include discerning what architectural pattern provides the largest enhancement and reproducibility when sampling the spore coat and whether some method of immobilization, or attraction, of the spores to the surface is necessary. We will present preliminary results of bacterial spore identification as well as a comparison of the substrates studied.

Paper Details

Date Published: 13 August 2004
PDF: 11 pages
Proc. SPIE 5416, Chemical and Biological Sensing V, (13 August 2004); doi: 10.1117/12.542073
Show Author Affiliations
Jay E. Pendell Jones, ITT Industries (United States)
Nicholas F. Fell Jr., U.S. Army Research Lab. (United States)
Troy A. Alexander, U.S. Army Research Lab. (United States)
Augustus W. Fountain III, U.S. Military Academy (United States)

Published in SPIE Proceedings Vol. 5416:
Chemical and Biological Sensing V
Patrick J. Gardner, Editor(s)

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