A liquid waveguide based evanescent wave sensor integrated onto a microfluidic chip

X. C. Li, J. Wu, A. Q. Liu, Z. G. Li, Y. C. Soew, H. J. Huang, K. Xu, J. T. Lin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

59 Citations (Scopus)

Abstract

An evanescent wave sensor based on liquid waveguide is integrated onto a microfluidic chip. The structure of the liquid waveguide consists of three streams with two low refractive index fluids as cladding layers, which envelop a high refractive index fluid as a core layer along a microchannel. Light is coupled into the core layer, and a detected sample is injected into one cladding layer. The profile of the output light modal power is changed by varying the concentration of the sample. The sensor with a sensitivity of 275 μ m 2 lmol can be used for real-time, low-cost, and label-free measurements in a wide range of applications.

Original languageEnglish
Article number193901
JournalApplied Physics Letters
Volume93
Issue number19
DOIs
Publication statusPublished - Jan 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint

Dive into the research topics of 'A liquid waveguide based evanescent wave sensor integrated onto a microfluidic chip'. Together they form a unique fingerprint.

Cite this