Surface enhanced Raman spectroscopy and fluorescence based on black silver

Zhida Xu; Jing Jiang; Yi Chen; Manas R. Gartia; Gang Logan Liu

doi:10.1117/12.892296

12 September 2011 Surface enhanced Raman spectroscopy and fluorescence based on black silver

Zhida Xu, Jing Jiang, Yi Chen, Manas R. Gartia, Gang Logan Liu

Proceedings Volume 8099, Biosensing and Nanomedicine IV; 80990W (2011) https://doi.org/10.1117/12.892296
Event: SPIE NanoScience + Engineering, 2011, San Diego, California, United States

Abstract

We demonstrate surface plasmon-induced enhancements in optical imaging and spectroscopy on silver coated silicon nanocones which we call black silver substrate. The black silver substrate with dense and homogeneous nanocone forest structure is fabricated on wafer level with a mass producible nanomanufacturing method. The black silver substrate is able to efficiently trap and convert incident photons into localized plasmons in a broad wavelength range, which permits the enhancement in optical absorption from UV to NIR range by 12 times, the visible fluorescence enhancement of ~30 times and the NIR Raman scattering enhancement factor up to ~10⁸. We show a considerable potential of the black silver substrate in high sensitivity and broadband optical sensing and imaging of chemical and biological molecules.one)

Citation Download Citation

Zhida Xu, Jing Jiang, Yi Chen, Manas R. Gartia, and Gang Logan Liu "Surface enhanced Raman spectroscopy and fluorescence based on black silver", Proc. SPIE 8099, Biosensing and Nanomedicine IV, 80990W (12 September 2011); https://doi.org/10.1117/12.892296

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