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24 April 2017 SRS in the single molecule limit (Conference Presentation)
Eric O. Potma, Kevin T. Crampton, Alexander Fast, Vartkess A. Apkarian
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Proceedings Volume 10069, Multiphoton Microscopy in the Biomedical Sciences XVII; 100690V (2017) https://doi.org/10.1117/12.2254176
Event: SPIE BiOS, 2017, San Francisco, California, United States
Abstract
We present combined surface-enhanced stimulated Raman scattering (SE-SRS) and surface-enhanced coherent anti-Stokes Raman scattering (SE-CARS) measurements on individual plasmonic antennas dressed with bipyridyl-ethylene molecules. By carefully optimizing the conditions for performing SE-SRS experiments, we have obtained stable and reproducible molecular surface-enhanced SRS spectra from single nano-antennas. Using surface-enhanced Raman scattering (SERS) and transmission electron microscopy of the same antennas, we confirm that the observed SE-SRS signals originate from only one or a few molecules. We highlight the physics of surface enhancement in the context of coherent Raman scattering and derive sensitivity parameters under the relevant conditions. The implications of single molecule SRS measurements are discussed.
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Eric O. Potma, Kevin T. Crampton, Alexander Fast, and Vartkess A. Apkarian "SRS in the single molecule limit (Conference Presentation)", Proc. SPIE 10069, Multiphoton Microscopy in the Biomedical Sciences XVII, 100690V (24 April 2017); https://doi.org/10.1117/12.2254176
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KEYWORDS
Molecules
Raman scattering
Antennas
Physics
Plasmonics
Scatter measurement
Transmission electron microscopy
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