Super-high enhancement of surface enhanced Raman scattering substrate via resonance coupling

Wenxue Li; Zhisen Jiang; Lin Pang

doi:10.1117/12.2551659

21 February 2020 Super-high enhancement of surface enhanced Raman scattering substrate via resonance coupling

Wenxue Li, Zhisen Jiang, Lin Pang

Proceedings Volume 11257, Plasmonics in Biology and Medicine XVII; 1125716 (2020) https://doi.org/10.1117/12.2551659
Event: SPIE BiOS, 2020, San Francisco, California, United States

Abstract

Raman spectroscopy provides vibration and rotation modes of the molecule, and directly reflects the molecular structure of the analyte. Surface enhanced Raman spectroscopy may be applied to practical applications because greater Raman scattering cross section. This paper proposed a large-area nanoslit array Surface Enhanced Raman Scattering (SERS) substrate which is cost effective. By exciting two resonance modes and coupling them together simultaneously, a strong local electromagnetic field was obtained. Up to 10⁸ Raman signals enhancement factor was achieved. Down to 10^-15 M minimum detection concentration was achieved. This substrate can be used as surface plasmonic resonance (SPR). Super-high electromagnetic field enhancement effect also can improve the sensitivity of SPR detection.

Citation Download Citation

Wenxue Li, Zhisen Jiang, and Lin Pang "Super-high enhancement of surface enhanced Raman scattering substrate via resonance coupling", Proc. SPIE 11257, Plasmonics in Biology and Medicine XVII, 1125716 (21 February 2020); https://doi.org/10.1117/12.2551659

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