Complementary templated positive and inverse sub-micron pyramids array for surface enhanced raman spectroscopy

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We demonstrate gold coated surface enhanced Raman scattering (SERS) substrates with a pair of complementary structures-positive and inverted pyramids array structures fabricated by polymer replication of each other. The SERS enhancement factors were measured uniformly as 7.2×104 for positive pyramids substrate while 1.6×106 for inverted pyramids substrate with Rhodamine 6G as the target analyte. Based on optical reflection measurement and finite difference time domain (FDTD) simulation result, we propose the explanation for the enhancement factor difference. It is attributed to plasmon resonance matching. With this simple, fast and versatile complementary molding process, we can produce SERS substrates with extremely low cost and high throughput.

Original languageEnglish (US)
Title of host publication15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Pages562-564
Number of pages3
StatePublished - Dec 1 2011
Event15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011 - Seattle, WA, United States
Duration: Oct 2 2011Oct 6 2011

Publication series

Name15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Volume1

Other

Other15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
CountryUnited States
CitySeattle, WA
Period10/2/1110/6/11

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Keywords

  • Complementary template molding
  • FDTD simulation
  • SERS
  • Surface plasmon resonance

ASJC Scopus subject areas

  • Control and Systems Engineering

Cite this

Xu, Z., Wu, H. Y., Ali, S. U., Jiang, J., Cunningham, B. T., & Liu, G. L. (2011). Complementary templated positive and inverse sub-micron pyramids array for surface enhanced raman spectroscopy. In 15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011 (pp. 562-564). (15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011; Vol. 1).