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Proceedings Paper

Surface enhanced Raman spectroscopy and fluorescence based on black silver
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Paper 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)

Paper Details

Date Published: 13 September 2011
PDF: 8 pages
Proc. SPIE 8099, Biosensing and Nanomedicine IV, 80990W (13 September 2011); doi: 10.1117/12.892296
Show Author Affiliations
Zhida Xu, Univ. of Illinois at Urbana-Champaign (United States)
Jing Jiang, Univ. of Illinois at Urbana-Champaign (United States)
Yi Chen, Univ. of Illinois at Urbana-Champaign (United States)
Manas R. Gartia, Univ. of Illinois at Urbana-Champaign (United States)
Gang Logan Liu, Univ. of Illinois at Urbana-Champaign (United States)


Published in SPIE Proceedings Vol. 8099:
Biosensing and Nanomedicine IV
Hooman Mohseni; Massoud H. Agahi; Manijeh Razeghi, Editor(s)

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