Special Section: Selected Papers from the 4th Mediterranean Conference on Nanophotonics

Detailed study of surface-enhanced Raman scattering from metallic nanosculptured thin films and their potential for biosensing

[+] Author Affiliations
Atef Shalabney

Ben Gurion University, Department of Electro optic Engineering and The Ilse Katz Institute for Nanoscale Sciences and Technology, Beer Sheva 84105, Israel

Chinmay Khare

Leibniz-Institute of Surface Modification, Permoserstrasse 15, 04318 Leipzig, Germany

Jens Bauer

Leibniz-Institute of Surface Modification, Permoserstrasse 15, 04318 Leipzig, Germany

Bernd Rauschenbach

Leibniz-Institute of Surface Modification, Permoserstrasse 15, 04318 Leipzig, Germany

University Leipzig, Institute for Experimental Physics II, Linnéstr. 5, 04307 Leipzig, Germany

I. Abdulhalim

Ben Gurion University, Department of Electro optic Engineering and The Ilse Katz Institute for Nanoscale Sciences and Technology, Beer Sheva 84105, Israel

Nanyang Technological University, School of Materials Science and Engineering, 637722, Singapore

J. Nanophoton. 6(1), 061605 (Sep 18, 2012). doi:10.1117/1.JNP.6.061605
History: Received March 28, 2012; Revised May 29, 2012; Accepted July 24, 2012
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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.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Atef Shalabney ; Chinmay Khare ; Jens Bauer ; Bernd Rauschenbach and I. Abdulhalim
"Detailed study of surface-enhanced Raman scattering from metallic nanosculptured thin films and their potential for biosensing", J. Nanophoton. 6(1), 061605 (Sep 18, 2012). ; http://dx.doi.org/10.1117/1.JNP.6.061605


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