Nanoimprint lithography of Al nanovoids for deep-UV SERS

Tao Ding, Daniel O. Sigle, Lars O. Herrmann, Daniel Wolverson, Jeremy J. Baumberg

Research output: Contribution to journalArticle

58 Citations (Scopus)
143 Downloads (Pure)

Abstract

Deep-ultraviolet surface-enhanced Raman scattering (UV-SERS) is a promising technique for bioimaging and detection because many biological molecules possess UV absorption lines leading to strongly resonant Raman scattering. Here, Al nanovoid substrates are developed by combining nanoimprint lithography of etched polymer/silica opal films with electron beam evaporation, to give a high-performance sensing platform for UV-SERS. Enhancement by more than 3 orders of magnitude in the UV-SERS performance was obtained from the DNA base adenine, matching well the UV plasmonic optical signatures and simulations, demonstrating its suitability for biodetection.

Original languageEnglish
Pages (from-to)17358-17363
Number of pages6
JournalACS Applied Materials and Interfaces
Volume6
Issue number20
Early online date7 Oct 2014
DOIs
Publication statusPublished - 7 Oct 2014

Keywords

  • adenine
  • nanobowls
  • polymer opals
  • resonant Raman
  • stamps

ASJC Scopus subject areas

  • Materials Science(all)

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