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Nunes PS, Mortensen NA, Kutter JP, et al. Photonic crystal resonator integrated in a microfluidic system. Opt Lett. 2008;33(14):1623-5doi: 10.1364/ol.33.001623.
Nunes, P. S., Mortensen, N. A., Kutter, J. P., & Mogensen, K. B. (2008). Photonic crystal resonator integrated in a microfluidic system. Optics letters, 33(14), 1623-5. https://doi.org/10.1364/ol.33.001623
Nunes, P S, et al. "Photonic crystal resonator integrated in a microfluidic system." Optics letters vol. 33,14 (2008): 1623-5. doi: https://doi.org/10.1364/ol.33.001623
Nunes PS, Mortensen NA, Kutter JP, Mogensen KB. Photonic crystal resonator integrated in a microfluidic system. Opt Lett. 2008 Jul 15;33(14):1623-5. doi: 10.1364/ol.33.001623. PMID: 18628818.
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Opt Lett. 2008 Jul 15;33(14):1623-5. doi: 10.1364/ol.33.001623.

Photonic crystal resonator integrated in a microfluidic system.

Optics letters

P S Nunes, N A Mortensen, J P Kutter, K B Mogensen

Affiliations

  1. Department of Micro- and Nanotechnology, Technical University of Denmark, Lyngby, Denmark. [email protected]

PMID: 18628818 DOI: 10.1364/ol.33.001623

Abstract

We report on a novel optofluidic system consisting of a silica-based 1D photonic crystal, integrated planar waveguides, and electrically insulated fluidic channels. An array of pillars in a microfluidic channel designed for electrochromatography is used as a resonator for on-column label-free refractive index detection. The resonator was fabricated in a silicon oxynitride platform, to support electro-osmotic flow, and operated at lambda=1.55 microm. Different aqueous solutions of ethanol with refractive indices ranging from n=1.3330 to 1.3616 were pumped into the column/resonator, and the transmission spectra were recorded. Linear shifts of the resonant wavelengths yielded a maximum sensitivity of Deltalambda/Deltan=480 nm/RIU (refractive index unit), and a minimum difference of Deltan=0.007 RIU was measured.

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