Abstract

A novel fiber-optic surface-enhanced Raman scattering (SERS) microfluidic chip integrated with an embedded Raman probe is presented and demonstrated. The Raman probe consists of the offset-multimode-fiber (MMF)-capillary-MMF (OMCM) structure and SERS substrate. The probe is embedded in the microfluidic channel to form a compact and portable chip. The chip is employed with a fiber coupler in an all-fiber detection system, which has a good stability compared to the free space focusing by the conventional confocal Raman microscope. The excitation light transmits from both ends of the OMCM probe into the capillary, and the generated Raman scattered signals are collected by two MMFs simultaneously. Experimental results of the Rhodamine 6G (R6G) detection show that the Raman signal intensity increases in a linear pattern at 1509cm1 with the increase of R6G concentrations. This kind of chip is compact, integrated, and miniaturized for the Raman signal detection. Furthermore, it can be fabricated easily in large quantities at cost, rendering promising applications.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
All-fiber SERS sensing with a depressed double cladding fiber probe embedded in a microfluidic chip

Shiyu Li, Li Xia, Wei Li, Xin Chen, Zhao Yang, and Jianchun Xia
Appl. Opt. 58(29) 7929-7934 (2019)

Compact dual-fiber surface-enhanced Raman scattering sensor with monolayer gold nanoparticles self-assembled on optical fiber

Hongwen Zhou, Jiansheng Liu, Haitao Liu, and Zheng Zheng
Appl. Opt. 57(27) 7931-7937 (2018)

Photoreduced silver nanoparticles grown on femtosecond laser ablated, D-shaped fiber probe for surface-enhanced Raman scattering

Zhen Yin, Youfu Geng, Qingli Xie, Xueming Hong, Xiaoling Tan, Yuzhi Chen, Lele Wang, Wenjia Wang, and Xuejin Li
Appl. Opt. 55(20) 5408-5412 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription