Title: Influence of swimming strategy on microorganism separation by asymmetric obstacles
Authors: Berdakin, I. ×
Jeyaram, Y.
Moshchalkov, Victor
Venken, Lyn
Dierckx, Seppe
Vanderleyden, Jos
Silhanek, A.V.
Condat, C.A.
Marconi, V.I. #
Issue Date: May-2013
Publisher: Published by the American Physical Society through the American Institute of Physics
Series Title: Physical Review E, Statistical, Nonlinear and Soft Matter Physics vol:87 issue:5
Article number: 052702
Abstract: It has been shown that a nanoliter chamber separated by a wall of asymmetric obstacles can lead to an inhomogeneous distribution of self-propelled microorganisms. Although it is well established that this rectification effect arises from the interaction between the swimmers and the non-centrosymmetric pillars, here we demonstrate numerically that its efficiency is strongly dependent on the detailed dynamics of the individual microorganism. In particular, for the case of run-and-tumble dynamics, the distribution of run lengths, the rotational diffusion and the partial preservation of run orientation memory through a tumble are important factors when computing the rectification efficiency. In addition, we optimize the geometrical dimensions of the asymmetric pillars in order to maximize the swimmer concentration and we illustrate how can be used for sorting by swimming strategy in a long array of parallel obstacles.
ISSN: 1539-3755
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre of Microbial and Plant Genetics
Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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