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On-chip photonic tweezers for photonics, microfluidics, and biology

Published on 29 March 2018
On-chip photonic tweezers for photonics, microfluidics, and biology
Pin C., Renaut C., Tardif M., Jager J.-B., Delamadeleine E., Picard E., Peyrade D., Hadji E., De Fornel F., Cluzel B.
Source-TitleProceedings of SPIE - The International Society for Optical Engineering
Groupe Optique de Champ Proche, LRC SiNOPTIQ du CEA, Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR CNRS 6303, Université de Bourgogne-Franche Comté, 9. Av. A. Savary, Dijon, France, Université Grenoble Alpes, INAC-SP2M-SINAPS, Grenoble, France, CEA, INAC-PHELIQS-SINAPS, Grenoble, France, Université Grenoble Alpes, CNRS, CEA-Leti Minatec, LTM, Grenoble Cedex, France, RIES, Hokkaido University, Sapporo, Japan
Near-field optical forces arise from evanescent electromagnetic fields and can be advantageously used for on-chip optical trapping. In this work, we investigate how evanescent fields at the surface of photonic cavities can efficiently trap micro-objects such as polystyrene particles and bacteria. We study first the influence of trapped particle's size on the trapping potential and introduce an original optofluidic near-field optical microscopy technique. Then we analyze the rotational motion of trapped clusters of microparticles and investigate their possible use as microfluidic micro-tools such as integrated micro-flow vane. Eventually, we demonstrate efficient on-chip optical trapping of various kinds of bacteria. © 2017 SPIE.
bacteria trapping, lab-on-a-chip, near-field optical forces, near-field optical microscopy, Optofluidics, photonic tweezers, silicon photonics
Bacteria, Electromagnetic fields, Evanescent fields, Lab-on-a-chip, Microfluidics, Optical data storage, Optical microscopy, Photonics, Rotation, Near field optical microscopy, On-chip photonics, Optical force, Opto-fluidics, Polystyrene particle, Rotational motion, Silicon photonics, Trapping potential, Optical tweezers

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