Nanoreplicated positive and inverted submicrometer polymer pyramid array for surface-enhanced Raman spectroscopy

Zhida Xu; Hsin-Yu Wu; Syed Usman Ali; Jing Jiang; Brian T. Cunningham; Logan Liu

doi:10.1117/1.3663259

1 January 2011 Nanoreplicated positive and inverted submicrometer polymer pyramid array for surface-enhanced Raman spectroscopy

Zhida Xu, Hsin-Yu Wu, Syed Usman Ali, Jing Jiang, Brian T. Cunningham, Logan Liu

Author Affiliations +

Journal of Nanophotonics, Vol. 5, Issue 1, 053526 (January 2011). https://doi.org/10.1117/1.3663259

Abstract

We demonstrated gold-coated polymer surface enhanced Raman scattering (SERS) substrates with a pair of complementary structures-positive and inverted pyramid array structures fabricated by a multiple-step molding and replication process. The uniform SERS enhancement factors over the entire device surface were measured as 7.2×10⁴ for positive pyramid substrates while 1.6×10⁶ for inverted pyramid substrates with Rhodamine 6G as the _target analyte. Based on the optical reflection measurement and finite difference time domain simulation result, the enhancement factor difference is attributable to plasmon resonance matching and to SERS "hot spots" distribution. With this simple, fast, and versatile complementary molding process, we can produce polymer SERS substrates with extremely low cost, high throughput, and high repeatability.

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Zhida Xu, Hsin-Yu Wu, Syed Usman Ali, Jing Jiang, Brian T. Cunningham, and Logan Liu "Nanoreplicated positive and inverted submicrometer polymer pyramid array for surface-enhanced Raman spectroscopy," Journal of Nanophotonics 5(1), 053526 (1 January 2011). https://doi.org/10.1117/1.3663259

Published: 1 January 2011

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