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We proposed a new method for remote-plasmonic enhanced Raman scattering (RPERS) spectroscopy that overcomes the limitations of surface-enhanced Raman scattering (SERS) spectroscopy. RPERS uses long-range molecular-plasmon coupling to achieve high sensitivity and quantification in enhanced Raman spectroscopy. The authors constructed RPERS substrates consisting of Ag nanoislands and columnar silica structures, which demonstrated a 2x10^7 enhancement in Raman scattering for Rhodamine 6G molecules, even when the metal nanostructures and the analyte molecules were over 100 nm apart. The RPERS substrates also exhibited improved reproducibility, stability, and sensitivity compared to conventional SERS substrates.
Conference Presentation
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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