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Issue 20, 2013
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Hybrid optofluidic integration

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Abstract

Complete integration of microfluidic and optical functions in a single lab-on-chip device is one goal of optofluidics. Here, we demonstrate the hybrid integration of a PDMS-based fluid handling layer with a silicon-based optical detection layer in a single optofluidic system. The optical layer consists of a liquid-core antiresonant reflecting optical waveguide (ARROW) chip that is capable of single particle detection and interfacing with optical fiber. Integrated devices are reconfigurable and able to sustain high pressures despite the small dimensions of the liquid-core waveguide channels. We show the combination of salient sample preparation capabilities—particle mixing, distribution, and filtering—with single particle fluorescence detection. Specifically, we demonstrate fluorescent labelling of λ-DNA, followed by flow-based single-molecule detection on a single device. This points the way towards amplification-free detection of nucleic acids with low-complexity biological sample preparation on a chip.

Graphical abstract: Hybrid optofluidic integration

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Supplementary files

Article information


Submitted
09 Jul 2013
Accepted
25 Jul 2013
First published
23 Aug 2013

Lab Chip, 2013,13, 4118-4123
Article type
Paper

Hybrid optofluidic integration

J. W. Parks, H. Cai, L. Zempoaltecatl, T. D. Yuzvinsky, K. Leake, A. R. Hawkins and H. Schmidt, Lab Chip, 2013, 13, 4118 DOI: 10.1039/C3LC50818H

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