Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
Volume 27, Issue 5, Pages 977-984Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAA.27.000977
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Funding
- National Science Foundation (NSF) [ECCS-0823921]
- University of California
- University Affiliated Research Center (UARC)/NASA
- UC Santa Cruz
- Directorate For Engineering [0823921] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys [0823921] Funding Source: National Science Foundation
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A high-sensitivity molecular sensor using a hollow-core photonic crystal fiber (HCPCF) based on surface-enhanced Raman scattering (SERS) has been experimentally demonstrated and theoretically analyzed. A factor of 100 in sensitivity enhancement is shown in comparison to direct sampling under the same conditions. With a silver nanoparticle colloid as the SERS substrate and Rhodamine 6G as a test molecule, the lowest detectable concentration is 10(-10) M with a liquid-core photonic crystal fiber (LCPCF) probe, and 10(-8) M for direct sampling. The high sensitivity provided by the LCPCF SERS probe is promising for molecular detection in various sensing applications. (C) 2010 Optical Society of America
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