Photonic Crystal Fibre SERS Sensors Based on Silver Nanoparticle Colloid  

作　　者：谢志国 鲁拥华 王沛 林开群 阎杰 明海 

机构地区：[1]Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Physics, University of Science and Technology of China, Hefei 230026

出　　处：《Chinese Physics Letters》2008年第12期4473-4475,共3页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Programme of China under Grant No 2006cb302905, the National Natural Science Foundation of China under Grant Nos 60736037 （key project） and 10704070, and the High-Technology Research and Development Programme of China under Grant No 2007AA06Z420, the Science and Technological Fund of Anhui Province for Outstanding Youth （08040106805）.

摘　　要：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.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.

关 键 词：field emission molybdenum dioxide enhancement factor 

分 类 号：O43[机械工程—光学工程]