Abstract
Highly ordered gold nanopillar arrays were fabricated using anodized aluminum oxide (AAO) templates. Nanopillars with a dimension of 110 ±15 nm in vertical height and 75 ±10 nm in base diameter were formed with a density of 150μm-2. The ordered nanopillar arrays give reproducible surface-enhanced Raman scattering (SERS) at a detection limit of 10-8 M using thionine as probing molecules. The enhancement by the Au nanopillar arrays was comparable with or better than that of dispersed gold nanoparticle SERS substrates. This work demonstrates a new technique for producing highly ordered and reproducible SERS substrates potentially applicable for chemical and biological assay.
Original language | English |
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Pages (from-to) | 5757-5760 |
Number of pages | 4 |
Journal | Langmuir |
Volume | 23 |
Issue number | 10 |
DOIs | |
State | Published - May 8 2007 |