Chin. Phys. Lett.  2008, Vol. 25 Issue (12): 4473-4475    DOI:
Original Articles |
Photonic Crystal Fibre SERS Sensors Based on Silver Nanoparticle Colloid
XIE Zhi-Guo, LU Yong-Hua, WANG Pei, LIN Kai-Qun, YAN Jie, MING Hai
Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Physics, University of Science and Technology of China, Hefei 230026
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XIE Zhi-Guo, LU Yong-Hua, WANG Pei et al  2008 Chin. Phys. Lett. 25 4473-4475
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Abstract

A photonic crystal fibre (PCF) surface enhanced Raman scattering (SERS) sensor is developed based on silver nanoparticle colloid. Analyte solution and silver nanoparticles are injected into the air holes of PCF by a simple modified syringe to overcome mass-transport constraints, allowing more silver nanoparticles involved in SERS activity. This sensor offers significant benefit over the conventional SERS sensor with high flexibility, easy manufacture. We demonstrate the detection of 4-mercaptobenzoic acid (4-MBA) molecules with the injecting way and the common dipping measurement. The injecting way shows obviously better results than the dipping one. Theoretical analysis indicates that this PCF SERS substrate offers enhancement of about 7 orders of magnitude in SERS active area.

Keywords: 82.80.-d      07.07.Df      42.81.-i     
Received: 12 September 2008      Published: 27 November 2008
PACS:  82.80.-d (Chemical analysis and related physical methods of analysis)  
  07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)  
  42.81.-i (Fiber optics)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I12/04473
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Articles by authors
XIE Zhi-Guo
LU Yong-Hua
WANG Pei
LIN Kai-Qun
YAN Jie
MING Hai
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