Optical trapping and binding of particles in an optofluidic stable Fabry–Pérot resonator with single-sided injection

Abstract : In this article, microparticles are manipulated inside an optofluidic Fabry–Pérot cylindrical cavity embedding a fluidic capillary tube, taking advantage of field enhancement and multiple reflections within the optically-resonant cavity. This enables trapping of suspended particles with single-side injection of light and with low optical power. A Hermite–Gaussian standing wave is developed inside the cavity, forming trapping spots at the locations of the electromagnetic field maxima with a strong intensity gradient. The particles get arranged in a pattern related to the mechanism affecting them: either optical trapping or optical binding. This is proven to eventually translate into either an axial one dimensional (1D) particle array or a cluster of particles. Numerical simulations are performed to model the field distributions inside the cavity allowing a behavioral understanding of the phenomena involved in each case.
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Contributeur : Elodie Richalot <>
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Dernière modification le : jeudi 13 septembre 2018 - 15:24:07
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Noha Ali Aboulela Gaber, Maurine Malak, Frédéric Marty, Dan Angelescu, Elodie Richalot, et al.. Optical trapping and binding of particles in an optofluidic stable Fabry–Pérot resonator with single-sided injection. Lab on a Chip, Royal Society of Chemistry, 2014, 14 (13), pp.2259-2265. 〈https://www.ncbi.nlm.nih.gov/pubmed/24816268〉. 〈10.1039/c3lc51438b〉. 〈hal-01438420〉

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