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High-throughput refractive index-based microphotonic sensor for enhanced cellular discrimination

Antoine Leblanc-Hotte, Geneviève Chabot-Roy, Livia Odagiu, Manon Richaud, Sylvie Lesage, Jean-Sébastien Delisle and Yves-Alain Peter

Article (2018)

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Cite this document: Leblanc-Hotte, A., Chabot-Roy, G., Odagiu, L., Richaud, M., Lesage, S., Delisle, J.-S. & Peter, Y.-A. (2018). High-throughput refractive index-based microphotonic sensor for enhanced cellular discrimination. Sensors and Actuators B: Chemical, 266, p. 255-262. doi:10.1016/j.snb.2018.03.087
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This paper presents a novel microphotonic sensor based on silicon technologies for high-throughput single cell measurements. It employs a highly sensitive Fabry-Pérot resonant cavity to extract cellular refractive index information. The integrated large cross-section rib waveguides provide a single-mode like behavior important for resonant cell sensing. Differentiated myeloid cells derived from a promyelocytic leukemia cell line were injected in a microchannel, sheathlessly focused using inertial forces and analyzed while flowing through the resonant cavity volume. Results were compared against a commercial flow cytometer and showed a substantial improvement on cellular discrimination. Thus, this sensor has the ability to discriminate cell populations, usually identified using fluorescent parameters, without any dyes and can reach measurement rate as high as 2000 cells per second. By harnessing the cell's effective volume refractive index, our device offers complementary measurements readily improving actual technologies and thus providing crucial information for research and clinical professionals.

Uncontrolled Keywords

Microphotonic; Fabry-Pérot; Optical microcavity; Refractive index; Microfluidic; Cell sorting; Sensor

Open Access document in PolyPublie
Subjects: 2500 Génie électrique et électronique > 2505 Dispositifs et réseaux photoniques
3100 Physique > 3100 Physique
3100 Physique > 3110 Optique (voir aussi Dispositifs photoniques, 2505)
Department: Département de génie physique
Research Center: Non applicable
Funders: CRSNG/NSERC, Fonds de recherche du Québec - Nature et technologies (FRQNT)
Grant number: PGSD3-445848-2014, Equipe 173638, RQMP 187779
Date Deposited: 17 Apr 2018 17:07
Last Modified: 08 Apr 2021 10:42
PolyPublie URL: https://publications.polymtl.ca/3024/
Document issued by the official publisher
Journal Title: Sensors and Actuators B: Chemical (vol. 266)
Publisher: Elsevier
Official URL: https://doi.org/10.1016/j.snb.2018.03.087


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