“School of Physics”
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| Paper IPM / P / 12969 |
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| Abstract: | |||||
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We consider a low-Reynolds-number swimmer made from three spheres linked by two slender arms, and
explore its motion in a shear flow. This rodlike three-sphere swimmer finally follows the direction dictated by the
shear flow. To overcome this shortcoming, we propose a model in which the two outer spheres have permanent
magnetic moments along the arms. This magnetic swimmer can be navigated to a desired direction by applying
an external static and uniform magnetic field.
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