Plasmonic Interactions in Nano-Structured Voids

Lead Research Organisation: University of Southampton
Department Name: Sch of Chemistry

Abstract

Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.

Publications

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Huang FM (2011) Dressing plasmons in particle-in-cavity architectures. in Nano letters

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Johnson RP (2011) SERS from two-tier sphere segment void substrates. in Physical chemistry chemical physics : PCCP

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Lal N.N. (2011) Enhancing solar cells with localized plasmons in nanovoids in Optics InfoBase Conference Papers

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Lal NN (2011) Enhancing solar cells with localized plasmons in nanovoids. in Optics express

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Mahajan S (2009) Understanding the Surface-Enhanced Raman Spectroscopy "Background" in The Journal of Physical Chemistry C

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Min Huang F (2012) Direct assembly of three-dimensional mesh plasmonic rolls in Applied Physics Letters

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Speed JD (2011) SERS from molecules bridging the gap of particle-in-cavity structures. in Chemical communications (Cambridge, England)

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Tognalli N (2012) Incident Wavelength Resolved Resonant SERS on Au Sphere Segment Void (SSV) Arrays in The Journal of Physical Chemistry C

 
Description Our research led to a much deeper understanding of the way in which light interacts with the nanostructured metal surface, and in particular surface that comprise a hexagonal array of sphere segment voids (SSV) of sub-micron dimension. This has allowed us to control the interaction of light with the surface through changing the diameter of the sphere segment cavities and the thickness of the nanostructure. By controlling the interaction of light with the surface we have been able to design surfaces that give very strong, reproducible enhancements of the Raman spectra for molecules close to the metal surface (SERS). We have been able to exploit this to study the behaviour on molecules at electrode surfaces and to develop news ways to detect and discriminate DNA.
Exploitation Route The nanostructured sphere segment void (SSV) surfaces that we developed and studied in this project have been used by a number of research groups world wide as a platform for surface enhanced Raman spectroscopy (SERS) studies. These surfaces are also of interest for application in sensing and as a platform for diagnostic applications, for example in the discrimination of DNA.
Sectors Chemicals,Healthcare,Security and Diplomacy
 
Description The work carried out under thgis grant has been taken forward in further research on the application of plasmonic substrates for SERS detection of DNA.
First Year Of Impact 2012
Sector Healthcare,Security and Diplomacy