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Genre/Form: | Thèses et écrits académiques |
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Material Type: | Document, Thesis/dissertation, Internet resource |
Document Type: | Internet Resource, Computer File |
All Authors / Contributors: |
Jeremie Gachelin; Éric Clément, physicien).; Thomas Bickel; Axel Buguin; Salima Rafaï; Université Pierre et Marie Curie (Paris / 1971-2017).; École doctorale Physique en Île-de-France (Paris / 2014-....). |
OCLC Number: | 904975290 |
Notes: | Titre provenant de l'écran-titre. |
Description: | 1 online resource |
Responsibility: | Jeremie Gachelin ; sous la direction de Éric Clément. |
Abstract:
If we put active particles, ie. motile particles, in suspension into a _uid, collective behaviors can occur. In this document, we present experimental works using Escherichia Coli, a biological particle, micro_uidic devices, and numerical simulations. By these ways, we caracterized these swimmers, their collective motions, the impact of an external shear on their behavior, and rheological behavior of this kind of suspensions. We show that the typical size of these collective motions increases smoothly with the volume fraction, and that a critical shear rate exist and is the same for individual and collective motion under shear. We also show for that bacterial suspensions have a non-newtonian viscosity and describe their rheological behavior.
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