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Home List of Titles Advances in the nano-engineering of surface-enhanced Raman scattering substrates
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/57888
- Advances in the nano-engineering of surface-enhanced Raman scattering substrates
- White, Daniel J.; Stoddart, Paul R.
- The challenge of constructing precise and repeatable nanoparticle arrays for surfaceenhanced Raman scattering (SERS) has emerged as an important application area in nanotechnology. SERS is a powerful spectroscopic technique that provides trace-level detection of many different molecules and relies on the molecules under investigation to be in close proximity to a metal surface with nanoscale (10-100 nm) features. While there are presently a number of different ways of producing such features, the commonly used methods either rely on random processes with high levels of variability (such as electrochemical roughening) or expensive techniques such as lithography. These methods, though successful in producing SERS capable surfaces, are not suitable for cost effective mass production. As an alternative to these, novel substrates based on multiple core optical fibres and biological materials have recently been demonstrated. Macroscopic structure in the optical fibre preform can be reduced to the appropriate scale by the fibre drawing process, while nanostructured biological surfaces provide a convenient, naturally occurring SERS platform. Furthermore, an optical fibre platform inherently lends itself to mass production and provides easy integration with devices such as spectrometers and laser systems. Initial results from these sensors indicate a SERS signal repeatability of 6% and better than part-per-million sensitivity, both of which are comparable or superior to alternative systems. Results for emerging and commercially promising applications in glucose and water monitoring are also presented.
- Publication type
- Book chapter
- Research centre
- Swinburne University of Technology
- Nanotechnology research: new nanostructures, nanotubes and nanofibers / Xiaohua Huang (ed.), Chapter 8, pp. 261-290
- Publication year
- Nano-engineering; Surface-enhanced Raman scattering
- Nova Publishers
- Publisher URL
- Copyright © 2008.
- Peer reviewed