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Single-cell bacterium identification with a SOI optical microcavity

Abstract : Photonic crystals and microcavities act as on-chip nano-optical tweezers for identification and manipulation of biological objects. Until now, optical trapping of virus and bacteria has been achieved and their presence in the vicinity of the optical resonator is deduced by the shift in the resonant wavelength. Here, we show trapping and identification of bacteria through a properly tuned silicon on insulator microcavity. Through the spatial and temporal observations of bacteria–cavity interaction, the optical identification of three different kinds of bacteria is demonstrated.
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Contributor : Pierre R. Marcoux <>
Submitted on : Thursday, April 2, 2020 - 12:06:23 PM
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M. Tardif, J.-B. Jager, P. Marcoux, K. Uchiyamada, E. Picard, et al.. Single-cell bacterium identification with a SOI optical microcavity. Applied Physics Letters, American Institute of Physics, 2016, 109 (13), pp.133510. ⟨10.1063/1.4963070⟩. ⟨cea-02529391⟩

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