Code: TOA	Time Slot/Poster Number: 10:30 - 11:00 am	Session: SERS applications I
Coherence-based Nanoplasmonics for Chemical and Biomolecular Detection and Spectroscopy
Britt Lassiter; Lisa Brown; Aoune Barhoumi; Heidar Khaktesar Sobhani; Peter Nordlander; Naomi J. Halas
Rice University, Houston, TX
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Summary
We have recently shown that clusters and arrays of coupled plasmonic nanoparticles support coherent effects such as sub- and superradiance, Fano resonances and electromagnetically induced transparency. These structures exhibit greatly enhanced sensitivities to their local dielectric environment than would be found in simple metallic nanoparticles. Surface-enhanced spectroscopies can be combined by taking these effects into account in the design of nanoparticle arrays. Control of the near field properties of substrates is important in the study of biomolecules such as proteins or DNA. Highly regular SERS spectra of DNA and proteins allow us to obtain detailed information concerning their molecular properties.

Code: TOA	Time Slot/Poster Number: 11:00 - 11:30 am	Session: SERS Applications I
DNA Sequence Detection Using Surface Enhanced Resonance Raman Spectroscopy (SERRS) in a Homogeneous Multiplexed Assay
Karen Faulds; Douglas MacRae; Jennifer Dougan ; Duncan Graham; Alexandra MacAskill MacAskill
University of Strathclyde, Glasgow, United Kingdom
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Summary
Surface enhanced resonance Raman scattering (SERRS) is an analytical technique with several advantages over competitive techniques in terms of improved sensitivity and multiplexing. We have made great progress in the development of SERRS as a quantitative analytical method, in particular for the detection of DNA. However, the lack of quantitative data relating to real examples has prevented more widespread adoption of the technique. Here we demonstrate the development of molecular diagnostic assays which have been used successfully for the detection of disease states in clinical samples. Multiplexed detection of MRSA is demonstrated using novel SERRS based DNA assays.

Code: TOA	Time Slot/Poster Number: 11:30 - 11:50 am	Session: SERS Applications I
Surface Enhanced Non-linear Spectroscopy: Wavelength Scanned Hyper-Raman
Jon Camden
University of Tennessee, Knoxville, TN
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Summary
Surface enhanced vibrational spectroscopies based on plasmonic nanostructures demonstrate exquisite sensitivity towards the structure of surface-bound species and the ability to measure the vibrational spectrum of a single molecule. Despite the widespread adoption of surface enhanced spectroscopy, previous work has focused almost exclusively on linear spectroscopies leaving non-linear techniques unexplored. We are, therefore, examining surface enhanced hyper-Raman scattering (SEHRS) both as a prototypical non-linear spectroscopy and for its application to the study of surface bound species. We will discuss our recent wavelength scanned measurements of SEHRS as well as potential advantages of non-linear surface enhanced spectroscopy

Code: TOA	Time Slot/Poster Number: 11:50 am - 12:10 pm	Session: SERS Applications I
Surface-Enhanced Raman Scattering of Microorganisms
Mustafa Culha
Yeditepe University, Istanbul, Turkey
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Summary
Several sample preparation approaches for acquisition of reproducible SERS spectra from microorganisms such as bacteria and yeast are presented. The identification of bacterium and yeast in the presence of other bacteria and yeast is demonstrated using SERS spectra.

Code: TOA	Time Slot/Poster Number: 12:10 - 12:30 pm	Session: SERS Applications I
Surface Enhancement in Femtosecond Stimulated Raman Scattering
Evelyn Ploetz1, 3; Madalena Gellner2; Max Schütz2; Benjamin Marx1, 3; Sebastian Schlücker2; Peter Gilch1, 3
1Ludwig-Maximilians-Universität München (LMU), München, Germany; 2Universität Osnabrück, Osnabrück, Germany; 3Heinrich-Heine-Universität Düsseldorf (HHU), Düsseldorf, Germany
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Summary
Offering enhanced signals stimulated Raman scattering (SRS) finds increasing attention in time-resolved spectroscopy and in microscopy. It relies on the interaction of two tailored laser pulses with the sample: an intense picosecond pulse as pump pulse and a weak probe pulse. To further increase the Raman signal, one can bring the molecule of interest close to a metal surface and profit from surface enhanced Raman scattering (SERS). In this contribution, the combination of SRS and SERS is studied by comparing the spontaneous and stimulated Raman spectra of different organic monolayers chemiabsorbed onto Au/Ag nanoshells.