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- Title
Surface-enhanced Raman spectroscopy with a laser pointer light source and miniature spectrometer.
- Authors
Young, Matthew A.; Stuart, Douglas A.; Lyandres, Olga; Glucksberg, Matthew R.; Van Duyne, Richard P.
- Abstract
The initial steps toward a miniature, field portable sensor based on surface-enhanced Raman spectroscopy (SERS) are presented. It is demonstrated that a low-cost miniaturized Raman system can be used in place of a larger, higher-cost conventional Raman system. This system was developed by sequentially replacing components of a laboratory scale Raman spectroscopy system with smaller, lower-cost, commercially available components. For example, a green laser pointer was used as the excitation source, a reflectance probe fiber-optic cable was used for laser delivery and collection, and a compact card-based spectrometer was used for dispersion and detection. Spectra, collected with the laser pointer Raman system, are presented of a resonant (Rhodamine 6G) and a non-resonant (trans-1,2-bis(4-pyridyl)ethylene) molecule as well as a self-assembled monolayer (1-decanethiol). Small, low-cost sensors are in demand for a variety of applications, and SERS is positioned to contribute significantly with its remarkable sensitivity and molecular specificity.
- Subjects
RAMAN effect; RESONANCE Raman effect; RAMAN spectroscopy; LASERS; SPECTROMETERS
- Publication
Canadian Journal of Chemistry, 2004, Vol 82, Issue 10, p1435
- ISSN
0008-4042
- Publication type
Article
- DOI
10.1139/V04-098