Surface-enhanced Raman scattering sensor based on fused biconical taper zone of optical fiber |
| |
| Authors: | Zhen-yi Chen Hua Bai Kun Zhang Na Chen Fu-fei Pang Ting-yun Wang |
| |
| Institution: | Key Laboratory of Specialty Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University, Shanghai 200072, P. R. China |
| |
| Abstract: | In this paper, a novel surface-enhanced Raman scattering (SERS) sensor combined with fused biconical taper fiber (FBTF) and
film coated with silver sols is proposed. This structure is designed to significantly increase the SERS active surface when
the length of the taper is increased and the radius is reduced, since the penetration depth is inversely proportional to the
taper radius and proportional to the taper length according to the fiber-optic evanescent-wave theory. Based on the SERS sensing
principle, the feasibility of FBTF sensor is analyzed in this paper. As a result, the Raman spectrum of R6G is obtained from
the fused biconical taper zone surface coating with the silver sols in our experiments. The detected concentration is up to
10−7mol/L. |
| |
| Keywords: | surface-enhanced Raman scattering (SERS) fused biconical taper fiber (FBTF) evanescent wave penetration depth SERS-active surface |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《上海大学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《上海大学学报(英文版)》下载免费的PDF全文 |
