基于球状光纤探针的表面增强拉曼散射  

Surface Enhanced Raman Scattering Based on a Spherical Fiber Probe

作　　者：魏访[1] 邹志革[2] WEI Fang;ZOU Zhige(Wuhan Polytechnic Institute,Wuhan 430074,China;Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]武汉职业技术学院电信学院,武汉430074 [2]华中科技大学光学与电子信息学院,武汉430074

出　　处：《电子器件》2018年第5期1136-1140,共5页Chinese Journal of Electron Devices

基　　金：湖北省教育厅科学技术研究计划指导性项目(B201658)

摘　　要：通过烧制光纤小球制备球状光纤探针,并通过自组装法使银纳米颗粒较为均匀地分布在光纤探针表面,经测量计算得到球状光纤探针上银纳米颗粒的增强因子为7.2×104。利用浓度为10-5mol/L的罗丹明6G(R6G)溶液检测得到光纤小球直径在200μm左右时SERS增强效果最佳,且在相同实验条件下,制备的球状光纤探针与锥柱组合型光纤探针的SERS增强效果基本一致。球状光纤探针制作工艺简单安全、灵敏度高且结构稳定,在分子检测方面具有很大的应用前景。The silver nanoparticles are more evenly distributed on the surface of spherical fiber probe that prepared with firing fiber ball by self-assembly method.The enhancement factor of silver nanoparticles on the spherical fiber probe is calculated to be 7.2×10 4.By testing the SERS effect of the fiber probes with R6G solution,it has been demonstrated that the SERS effect was optimized at the diameter of about 200μm.When the experimental conditions are the same,the SERS enhancement effects of the spherical fiber probe and tapered fiber probe are basically the same.The fabrication of the spherical fiber probe is simple,safe,sensitive and stable.It has great potential in molecular detection.

关 键 词：球状光纤探针 表面增强拉曼散射(SERS) 银纳米颗粒 增强因子 重复性 

分 类 号：O657.37[理学—分析化学]