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

  title={Nanoreplicated positive and inverted submicrometer polymer pyramid array for surface-enhanced Raman spectroscopy},
  author={Zhida Xu and Logan Liu},
  journal={Journal of Nanophotonics},
We demonstrated gold-coated polymer surface enhanced Raman scattering (SERS) substrates with a pair of complementary structures—positive and inverted pyramid array struc- turesfabricatedbyamultiple-stepmoldingandreplicationprocess.TheuniformSERSenhance- ment factors over the entire device surface were measured as 7.2×10 4 for positive pyramid sub- strates while 1.6×10 6 for inverted pyramid substrates with Rhodamine 6G as the target analyte. Based on the optical reflection measurement and… Expand

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