Publication Type
Journal
Journal Name
Langmuir
Publication Date
Page Numbers
5757 to 5760
Volume
23
Issue
23
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 150 ��m-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.
