Fundamental studies of surface-enhanced Raman scattering (SERS) using aerosolized substrates

Obie Okponyia; Brent M. Williams; Kellie Patton; Douglas A. Stuart

doi:10.1117/12.919090

9 May 2012 Fundamental studies of surface-enhanced Raman scattering (SERS) using aerosolized substrates

Obie Okponyia, Brent M. Williams, Kellie Patton, Douglas A. Stuart

Proceedings Volume 8366, Advanced Environmental, Chemical, and Biological Sensing Technologies IX; 83660J (2012) https://doi.org/10.1117/12.919090
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

The research presented in this paper improves potential for the application of surface-enhanced Raman scattering (SERS) in remote detection and analysis. Remote (stand-off) Raman sensing, with its ability to "fingerprint" analyte based on their unique vibrational spectra, offers great potential to address the challenging analytical problem of identifying unknown substances in low concentrations in the form of vaporous emissions or clouds. An inexpensive nebulizer/spray chamber was designed to study the mixing of aerosolized SERS (surface-enhanced Raman scattering) active nanostructures with a vapor phase analyte, the fluorophore Rhodamine 6G (R6G). Improved signal intensities (EF=200) are gained via SERS. Vapor phase mixing of the analyte and substrate is rapid (< 5 seconds).

Citation Download Citation

Obie Okponyia, Brent M. Williams, Kellie Patton, and Douglas A. Stuart "Fundamental studies of surface-enhanced Raman scattering (SERS) using aerosolized substrates", Proc. SPIE 8366, Advanced Environmental, Chemical, and Biological Sensing Technologies IX, 83660J (9 May 2012); https://doi.org/10.1117/12.919090

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