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Title

Nanostructured optical fibre for surface-enhanced Raman scattering sensing

Author(s)

White, Daniel J.;  Mazzolini, Alex P.;  Stoddart, Paul R.

Abstract

Surface-enhanced Raman scattering (SERS) is a powerful spectroscopic tool for detecting low concentrations of many substances. The SERS effect occurs when a Raman active molecule is in contact with a metal surface having nanoscale features. While common SERS surfaces are formed on planar substrates, we present a technique whereby the surface is fabricated on the tips of custom designed optical fibres. The fibre presented is based on a modified imaging fibre which consists of a bundle of thousands of micron-sized individual optical fibres fused together in a coherent bundle. The fibre is then drawn such that each pixel is reduced to a nanoscale size. When chemically etched, the cores of the drawn pixels are eroded leaving an array of nanostructured wells. These are then coated with a thin layer of silver to enable SERS functionality. The design of the fibre, the manufacturing and etching processes and the characterisation of the SERS functionality will be presented.

Publication type

Conference paper

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy

Source

Proceedings of the International Society for Optical Engineering Conference (SPIE): Optical fabrication, testing and metrology III, Glasgow, United Kingdom, 02 September 2008 / Angela Duparre, Royald Geyl (eds.), Vol. 7102

Publication year

2008

Keyword(s)

Localised SPR;  Nanostructured optical fibre;  Simulation;  Surface-enhanced Raman scattering

Publisher

SPIE

ISSN

0277-786X (series ISSN)

ISBN

9780819473325

Publisher URL

http://dx.doi.org/10.1117/12.797582

Copyright

Copyright © 2008 Society of Photo-Optical Instrumentation Engineers. This paper was originally published in the proceedings of SPIE (Vol. 7102), and is available from: http://dx.doi.org/10.1117/12.797582. The published version of the paper is reproduced here in accordance with the copyright policy of the publisher. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Full text

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