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

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

doi:doi:10.1117/1.3663259

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Journal of Nanophotonics / Volume 5 / Research Papers

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

J. Nanophoton. 5, 053526 (Nov 28, 2011); http://dx.doi.org/10.1117/1.3663259

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Abstract

References (23)

Citing Articles (2)

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

University of Illinois at Urbana-Champaign, Department of Electrical and Computer Engineering, Urbana, Illinois 61801

University of Illinois at Urbana-Champaign, Department of Bioengineering, Urbana, Illinois 61801

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.

History

Received Sep 20, 2011
Accepted Nov 02, 2011
Revised Nov 01, 2011
Published online Nov 28, 2011

Digital Object Identifier

http://dx.doi.org/10.1117/1.3663259

Citation

Zhida Xu, Hsin-Yu Wu, Syed Usman Ali, Jing Jiang, Brian T. Cunningham and Gang Logan Liu, "Nanoreplicated positive and inverted submicrometer polymer pyramid array for surface-enhanced Raman spectroscopy", J. Nanophoton. 5, 053526 (Nov 28, 2011); http://dx.doi.org/10.1117/1.3663259