Transparent Raman-enhancing substrates for microbiological monitoring and insitu pollutant detection
Journal
Nanotechnology
Journal Volume
22
Journal Issue
38
Pages
1-5
Date Issued
2011
Author(s)
Abstract
Opaque Raman-enhancing substrates made of Ag nanoparticles on incompletely oxidized aluminum templates have been rendered transparent by an ion-drift process to complete the oxidation. The result shows that the transparent substrates exhibit high/uniform surface-enhanced Raman scattering (SERS) capability and good optical transmissivity, allowing for concurrent SERS characterization and high contrast transmission-mode optical imaging of S. aureus bacteria. We also demonstrate that the transparent substrates can used in conjunction with optical fibers as SERS sensors for in situ detection of malachite green down to 10(-9) M.
Publisher
IOPscience
Type
journal article