期刊
OPTICS COMMUNICATIONS
卷 282, 期 3, 页码 439-442出版社
ELSEVIER
DOI: 10.1016/j.optcom.2008.10.018
关键词
Surface-enhanced Raman scattering; Polymer optical fiber; Nanorods
类别
资金
- National Key Basic Research Program of China [2006CB302905]
- Key Program of National Natural Science Foundation of China [60736037]
- National Natural Science Foundation of China [10704070]
- High Technology Research and Development Program of China [2007AA06Z420]
- Science and Technological Fund of Anhui Province for Outstanding Youth [08040106805]
A surface-enhanced Raman scattering sensor is developed by etching polymer optical fiber and coating with gold nanorods. The SERS sensing experiments are demonstrated with the analyte molecules of rhodamine 6G (R6G) at 514.5 nm laser excitation. The results show that a strong fiber Raman background scattering overwhelm the R6G molecule Raman signal in common optrod configuration, but a distinct R6G SERS spectrum with 9 order magnitude enhancement can be observed while directly focusing light on the probe. Further modeling indicates the enhancement is attributed to both nanorods local field and their coupling. (C) 2008 Elsevier B.V. All rights reserved.
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