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Title: Performance characteristics of bio-inspired metal nanostructures as surface-enhanced Raman scattered (SERS) substrates

The fabrication of high-performance plasmonic nanomaterials for bio-sensing and trace chemical detection is a field of intense theoretical and experimental research. The use of metal-silicon nanopillar arrays as analytical sensors has been reported with reasonable results in recent years. The use of bio-inspired nanocomposite structures that follow the Fibonacci numerical architecture offers the opportunity to develop nanostructures with theoretically higher and more reproducible plasmonic fields over extended areas. The work presented here describes the nanofabrication process for a series of 40 µm × 40 µm bio-inspired arrays classified as asymmetric fractals (sunflower seeds and romanesco broccoli), bilaterally symmetric (acacia leaves and honeycombs), and radially symmetric (such as orchids and lily flowers) using electron beam lithography. In addition, analytical capabilities were evaluated using surface-enhanced Raman scattering (SERS). Here, the substrate characterization and SERS performance of the developed substrates as the strategies to assess the design performance are presented and discussed.
 [1] ;  [2] ;  [2] ;  [3] ;  [1] ;  [1]
  1. Univ. of Puerto Rico (Puerto Rico)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Applied Spectroscopy
Additional Journal Information:
Journal Volume: 70; Journal Issue: 9; Journal ID: ISSN 0003-7028
Society for Applied Spectroscopy
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org:
Country of Publication:
United States
36 MATERIALS SCIENCE; bio-inspired nanostructures; lithography; surface-enhanced spectroscopy; Fibonacci sequence
OSTI Identifier: