Portable fiber sensors based on surface-enhanced Raman scattering
- 1 December 2010
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 81 (12), 123103
- https://doi.org/10.1063/1.3518957
Abstract
Two portable molecular sensing systems based on surface-enhanced Raman scattering(SERS) have been experimentally demonstrated using either a tip-coated multimode fiber (TCMMF) or a liquid core photonic crystal fiber (LCPCF) as the SERS probe. With Rhodamine 6G as a test molecule, the TCMMF-portable SERS system achieved 2–3 times better sensitivity than direct sampling (focusing the laser light directly into the sample without the fiber probe), and a highly sensitive LCPCF-portable SERS system reached a sensitivity up to 59 times that of direct sampling, comparable to the sensitivity enhancement achieved using fiber probes in the bulky Renishaw system. These fiber SERS probes integrated with a portable Raman spectrometer provide a promising scheme for a compact and flexible molecular sensing system with high sensitivity and portability.Keywords
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