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Journal of Nanophotonics

Detailed study of surface-enhanced Raman scattering from metallic nanosculptured thin films and their potential for biosensing
Author(s): Atef H. Shalabney; Chinmay Khare; Jens Bauer; Bernd Rauschenbach; Ibrahim Abdulhalim
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Paper Abstract

Surface-enhanced Raman scattering (SERS) from silver nanosculptured thin films (STF) was studied in detail for biosensing. The influences of the nanostructures' sizes, topology, the substrate features, and the preparation conditions on the enhancement were examined. Enhancement factors on the order of 107 were obtained from silver nanorods deposited on bare silicon substrates with respect to their dense counterparts, using 4-aminotheophenol (4-ATP) for the Raman emission. The low detection limit that can be achieved with STFs is below 1 μg/lit of the probe molecule 4-ATP in Ethanol solution. Theoretical modeling based on a single small spheroidal nanoparticle helped in explaining the main properties of SERS from STFs. Stability of the films was noticed over a period of one year without significant degradation.

Paper Details

Date Published: 18 September 2012
PDF: 20 pages
J. Nanophoton. 6(1) 061605 doi: 10.1117/1.JNP.6.061605
Published in: Journal of Nanophotonics Volume 6, Issue 1
Show Author Affiliations
Atef H. Shalabney, Ben-Gurion Univ. of the Negev (Israel)
Chinmay Khare, Leibniz-Institut für Oberflächenmodifizierung e.V. (Germany)
Jens Bauer, Leibniz-Institut für Oberflächenmodifizierung e.V. (Germany)
Bernd Rauschenbach, Leibniz-Institut für Oberflächenmodifizierung e.V. (Germany)
Ibrahim Abdulhalim, Ben-Gurion Univ. of the Negev (Israel)


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