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
Fiber probe based microfluidic raman spectroscopy

P. C. Ashok, G. P. Singh, K. M. Tan, and K. Dholakia
Opt. Express 18(8) 7642-7649 (2010)

Two-photon fabrication of three-dimensional silver microstructures in microfluidic channels for volumetric surface-enhanced Raman scattering detection

Monica Focsan, Ana Maria Craciun, Simion Astilean, and Patrice L. Baldeck
Opt. Mater. Express 6(5) 1587-1593 (2016)

SERS-based detection in an optofluidic ring resonator platform

Ian. M. White, John Gohring, and Xudong Fan
Opt. Express 15(25) 17433-17442 (2007)

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