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Daddi-Moussa-Ider, Abdallah; Lisicki, Maciej; Löwen, Hartmut and Menzel, Andreas M.
(2020).
DOI: https://doi.org/10.1063/1.5142054
Abstract
Guiding active microswimmers by external fields to requested target locations is a promising strategy to realize complex transport on the microscale. For this purpose, one possibility consists of attaching the microswimmers to orientable passive components. Accordingly, we analyze theoretically, using a minimal model, the dynamics of a microswimmer when rigidly attached to a (significantly larger) microplatelet, here represented by a thin circular disk. In this way, we first determine the flow field in the whole space induced by a Stokeslet that is located above the center of a spatially fixed rigid disk of no-slip surface conditions. Finally, we determine and analyze possible trajectories of the overall composite. To this end, the platelet is additionally endowed with a permanent magnetic moment, which allows us to steer the motion of the whole composite by a homogeneous external magnetic field. As previous experimental studies suggest, related setups may be helpful to guide sperm cells to requested targets or for the purpose of coordinated drug delivery.
CORE (COnnecting REpositories)
CORE (COnnecting REpositories)
