Photonic crystal fiber as an optofluidic platform for surface-enhanced Raman scattering

Yun Han, Maung Kyaw Khaing Oo, Svetlana Sukhishvili, Henry Du

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

As both a waveguide and a gas/liquid transmission cell, photonic crystal fiber (PCF) allows synergistic integration of optics and microfluidics to form an unconventional optofluidic platform with long interaction path. In this paper, we report our strategy to achieve surface-enhanced Raman scattering (SERS) PCF optofluidics by polyelectrolyte-mediated immobilization of Ag nanoparticles (NPs) inside the fiber air channels. Through forward propagating Raman measurements and hyperspectral Raman imaging, we demonstrate the realization of SERS-active PCF optofluidics with accumulative Raman signal gain along the entire fiber length using both solid-core PCF (SC PCF) and hollow-core PCF (HC PCF). By numerical simulation and Raman measurements, we show that suspended-core PCF (SP PCF) consisting of a silica core surrounded by three large air channels conjoined by a thin silica web is the most robust platform of the three SC PCF microstructures investigated for evanescent-field SERS spectroscopy.

Original languageEnglish
Title of host publication2nd Workshop on Specialty Optical Fibers and Their Applications, WSOF-2
DOIs
StatePublished - 2010
Event2nd Workshop on Specialty Optical Fibers and Their Applications, WSOF-2 - Oaxaca, Mexico
Duration: 13 Oct 201015 Oct 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7839
ISSN (Print)0277-786X

Conference

Conference2nd Workshop on Specialty Optical Fibers and Their Applications, WSOF-2
Country/TerritoryMexico
CityOaxaca
Period13/10/1015/10/10

Keywords

  • Optofluidics
  • Photonic crystal fiber
  • Polyelectrolyte-mediated immobilization
  • Surface-enhanced Raman scattering

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